The Marcrist PG850 diamond tile drilling set gives tiling professionals everything needed to drill hard porcelain cleanly and quickly. Lasts up to 600 holes in the hardest porcelain. Comes complete in an aluminium carry case with water swivel, hose, pressure bottle and more.
The Marcrist PG850 diamond tile drilling set is one of those kits that actually earns its place in the van. If you’re regularly drilling porcelain, marble, granite or natural stone, you’ll know how quickly a cheap drill bites the dust. The PG850 is engineered to last, with Marcrist quoting up to 600 holes in the hardest porcelain tiles before the diamond segment gives up. That’s a serious number, and on a busy tiling job it makes a real difference to your cost per hole.
The 6mm PG850 diamond tile drill is the heart of the set, and the segment geometry is designed to cut fast without chipping the tile face. Anyone who’s had to explain a chipped edge to a customer will appreciate that. The drill runs wet, which is where the included water swivel comes in. It’s a professional-grade swivel with micro-adjustment, not the kind of thing you’d throw away after one job. Pair it with the 2m water hose and 1-litre pressure bottle and you’ve got a clean, controlled wet drilling setup straight out of the case.
What’s Inside the Marcrist PG850 Diamond Drilling Kit
Marcrist have put together a genuinely useful starter set here. Everything arrives in a solid aluminium carry case with foam insert, which keeps the bits protected and makes it easy to see at a glance if anything’s gone missing. The case has room for additional drills beyond the included 6mm, so as your collection grows it stays organised. The kit also includes a universal starter, drill ejector, and a key set covering 10mm to 22mm diameters, so you’re ready to expand to larger core sizes without hunting around for the right key.
The PG850 works with cordless drills, standard drilling machines and diamond core drill machines. On a tiling job where you’re moving around walls and floors constantly, being able to run cordless is a practical advantage that saves time.
Material Compatibility
The marcrist pg850 diamond tile drilling set handles all tile types and thicknesses, including porcelain, granite, marble, slate, mosaic and natural stone tiles. Whether you’re drilling through large-format rectified porcelain or a thicker piece of natural stone, the geometry of the PG850 segment is up to it. This isn’t a drill you’d reach for on brick or concrete, it’s built specifically for the tile trades.
For tiling contractors and fixers who drill hard materials day in, day out, the PG850 starter set removes the guesswork from setting up a wet drilling system and gives you a long-lasting drill to build around.
Pro Tip: Always uncoil the full length of the water hose before use and check the pressure bottle is pumped up sufficiently before starting: inconsistent water flow is the most common cause of premature diamond segment wear on tile drills.
The PG850 set is used by tiling contractors, stone fixers and installers working on both domestic and commercial projects. Typical jobs include drilling fixing holes through wall and floor tiles for sanitary ware, pipe penetrations, electrical back boxes and decorative fixings. It performs particularly well on large-format porcelain slabs and dense natural stone where lesser drills lose their edge quickly. The wet drilling system makes it suitable for indoor use without generating problematic dust, keeping the workspace clean and the tile surface intact.
Best For
Hard porcelain tile drilling
Natural stone and granite
Marble and slate
Mosaic tiles
All tile thicknesses
Indoor wet drilling setups
Compatible With
Cordless drills
Standard drilling machines
Diamond core drill machines
10mm to 22mm core sizes via included key set
Key Specifications
Included drill diameter: 6mm
Up to 600 holes in hardest porcelain
2m x 8mm water hose included
1-litre water pressure bottle included
Professional water swivel with micro-adjustment
Aluminium carry case with foam insert
Drill ejector and key set included
Not suitable for: The PG850 is not designed for drilling brick, block, concrete or screed. It should always be used with water cooling: dry drilling will damage the diamond segment rapidly and void any expected tool life.
Set up the water swivel on your drill, connect the 8mm hose and pump the pressure bottle to a steady working pressure before you start. Position the universal starter guide against the tile surface to stop the drill wandering on the glaze at the start of the hole. Once the drill has bitten in and you have a stable entry point, keep a consistent light-to-medium forward pressure and let the diamond do the work.
Maintain water flow throughout the cut. If the water supply drops or stops, lift off immediately rather than continuing dry, even briefly. Check the swivel micro-adjustment periodically on longer sessions to make sure water delivery stays centred. When swapping to larger diameter drills, use the key set to fit the correct size and store unused drills in the foam insert to protect the segments between uses.
Fit the professional water swivel to your drill chuck and connect the 2m water hose securely
Fill and pump the 1-litre pressure bottle to a consistent working pressure
Mark the tile surface at the drill point using a felt tip or masking tape cross
Position the universal starter guide over the mark to prevent skidding on the tile glaze
Start the drill at low speed with water flowing before applying any forward pressure
Once the starter guide groove is established, remove the guide and continue at steady speed
Apply light, consistent forward pressure and keep water flowing throughout the full depth of the hole
Withdraw the drill periodically on deeper holes to clear debris and maintain water flow to the tip
On completion, release pressure before removing the drill from the hole to avoid chipping the exit
Store all drills in the aluminium case foam insert after use to protect the diamond segments
Can the PG850 drill set be used with a standard cordless drill or does it need a specialist machine?
It works with cordless drills, standard drilling machines and diamond core drill machines. The main requirement is that you can run it wet using the included water swivel and pressure bottle system. Make sure your drill has a variable speed trigger so you can start slow and control the entry into the tile surface.
The set includes a 6mm drill. Can I use the aluminium case and water swivel setup with larger diameter drills?
Yes. The aluminium case has a foam insert with space for additional drills beyond the included 6mm, and the included key set covers 10mm to 22mm diameters, so the setup is designed to grow with your collection. The water swivel is a professional-grade component that will work with larger core sizes as you add them.
The Marcrist PG850 uses a sintered diamond segment bonded to a thin-wall steel barrel, engineered specifically for wet drilling into vitrified porcelain and natural stone. The segment geometry is designed to balance fast cutting speed with a clean exit hole, reducing the risk of spalling on the tile face. Diamond concentration and bond hardness are matched to the abrasive resistance of hard porcelain, which is why the stated 600-hole life figure is achievable in conditions where a softer bond would wear rapidly.
Reviews
There are no reviews yet.