Drill Bits & Accessories

The Irwin 88928 Speedbor Flat Bit 28mm × 160mm is a large-diameter wood-boring spade bit, designed for fast and efficient drilling in timber and wood products. With its 28mm cutting diameter and 160mm overall length, it provides excellent reach for drilling through studs, beams, joists, and other structural members. The Blue-Groove point and cutting design allow for faster chip removal, cleaner edges, and reduced splintering, making it an ideal choice for both professionals and serious DIY users.

Features:
Blue-Groove point and cutting edge for faster chip removal.
Double spur edges for reduced breakout and cleaner hole finish.
Reinforced hex shank to resist bending and reduce slipping in chucks.
160mm overall length for drilling into thicker timbers and deeper access points.
Hardened steel construction for strength and durability.
Designed for fast and clean hole drilling in both softwood and hardwood.

Specifications:
Manufacturer: Irwin
Part Number: 88928
SKU: IRW88928
Bit Type: Speedbor Flat (Spade) Bit - Blue-Groove
Diameter: 28mm
Length: 160mm
Shank Type: Reinforced hex shank
Material: Hardened steel
Intended Material: Softwood, hardwood, structural timber

Uses:
Drilling large 28mm holes through beams, studs, and joists.
Creating passages for conduit, pipes, or cable runs through timber structures.
Carpentry, construction, and framing applications requiring larger hole sizes.
Electrical and plumbing installations where bigger clean openings are necessary.
Woodworking, joinery, and cabinetry tasks needing precision and clean exit holes.