Bosch Expert SelfCut Speed Spade Bit 28mm x 152mm (1 pcs)

The Bosch Expert SelfCut Speed spade bit is one of the better-performing flat bits you can pick up for site work. If you’ve ever had a standard spade bit wander, clog, or need forcing through a floor joist, you’ll appreciate what these Bosch expert drill bits actually do differently. The self-feeding screw tip threads itself into the wood and pulls the bit forward, which means less downward pressure from you and a noticeably cleaner entry hole.

The wave-shaped cutting edge is the other bit worth knowing about. Rather than a flat paddle scraping its way through timber, the profile is designed to shear the material and eject chips upward quickly. In practice that means less heat build-up, fewer stalls, and a faster overall drilling speed, particularly in hardwood or when you’re running hole after hole through structural timber.

Where the Bosch Expert SelfCut Speed Spade Bit Gets Used

This is bread-and-butter kit for electricians chasing cables through joists and stud walls, and for plumbers and heating engineers running pipe runs through timber frames. Carpenters and joiners reach for flat bits regularly too, whether for hinge recesses, cable management, or timber joinery work. At 28mm diameter, it sits in a useful size range that works well for 20mm and 25mm conduit runs, as well as standard cable bundles.

Compatibility and Shank

The 1/4 inch hex shank fits any standard drill driver or impact driver with a hex chuck, which covers most cordless drills on site. It will also work in a standard three-jaw chuck without any adapter needed. The 152mm overall length gives you enough reach for most joist and stud drilling without needing extensions.

This is a single bit, priced individually, which makes it practical to replace a worn size without buying a full set. Worth keeping a spare in the bag if you’re doing a heavy first fix.