Drill Bits & Accessories

The Irwin Speedbor Flat Bit 12mm × 155mm is a wood-boring spade bit designed for delivering clean, fast holes in wood materials. With a 12mm diameter and a relatively long 155mm length, it is intended for reach into deep or difficult access areas. It belongs to the Speedbor / Blue-Groove line, featuring enhancements that help with chip removal and cleaner hole edges. It is suitable for both trade and serious DIY use, particularly where larger holes and deeper holes are required, such as framing, timber installation, or routing.

Features:
*12mm diameter for larger hole sizes.
*Long 155mm length for drilling into deep recesses or through thick timber.
*Speedbor / Blue-Groove point and cutting design for improved chip ejection and faster drilling.
*Enlarged / stronger shank (versus basic bits) for durability.
*Likely grooved or hex shank to reduce slippage in drill chucks or extensions.
*Hardened steel construction to withstand wear over repeated use.

Specifications:
*Manufacturer: Irwin
*Part Number: 88912
*SKU: IRW88912
*Diameter: 12mm
*Length: 155mm (overall)
*Bit Type: Spade / Flat Bit
*Shank Type: Standard / possibly grooved or hex (for grip)
*Material: Hardened steel
*Intended Materials: Wood (softwood, hardwood) and timber products

Uses:
*Drilling holes of about 12mm diameter in wooden studs, beams, joists, and thick timber.
*Making passage for cables, pipes or conduits through timber or structural members.
*Use in cabinetry or carpentry where deeper reach is needed (e.g. drilling from one side through to the other).
*Suitable for tradesmen, carpenters, builders, and serious DIY work where durability and clean finish are important.
*Situations needing quicker drilling and less cleanup of holes (less splintering, cleaner exit edges).