Irwin Lock-n-Load Quick Change Extension Bit Holder Chalk Lines Interchangeable cartridge holders (available separately)

Interchangeable cartridge holders (available separately)

holder with ring magnet for simple holding of even longer and heavier screws

with an integrated mico control knob for faster point to point alignment

thanks to the rough diamond-particle coating on the bit tip

Ergonomic and rugged non-slip rubber handle with a finger-guard ridge is durable and easy to grip

Irwin Lock-n-Load Quick Change Extension Bit Holder Chalk Lines Interchangeable cartridge holders (available separately)LOCK N LOAD SYSTEM for one handed quick release. JAW DESIGN holds bits securely on 6 flatted shanks, as well as ball detent bits. 1 4" QUICK CHANGE RANGE now holds insert bits. CARBON STEEL CONSTRUCTION SLEEVE AND BODY for durability and life LOCK N LOAD COMPATIBILITY.