Pocket-sized, BiTorsion Bit-Check with Rapidaptor for drill and drill drivers. Designed to prevent premature wear and extend service life due to precision hardening process. The BiTorsion Zone absorbs peak stress loads. The holder, with quick-release chuck, offers press-in auto-lock and rapid one-handed bit changes for insert and power bits. The holder spin sleeve allows steady screwdriving. BiTorsion diamond-coated bits ensure safe working, preventing slip. Additionally, where screws are driven into resistant materials, diamond-coated bits 'bite' into the fastener reducing cam-out effect. Colour-coded for easy bit selection. Supplied with case. Chrome Molybdenum Steel Blades Suitable for Power Screwdrivers & Hand Tool Bit Holders Diamond-Coated to Prevent Cam-Out Chrome Molybdenum Steel Blades Suitable for Power Screwdrivers & Hand Tool Bit Holders Diamond-Coated to Prevent Cam-Out