High-quality 1/4 inch hex-shaft drill bit, designed for reliable drilling through standard lining materials. Key benefits Precise fit: 1/4 inch hex shaft for secure, wobble-free engagement with standard hex chucks and quick-change drivers. Built for common lining thicknesses: Works with standard lining of 9.5 mm (3/8 inch) film, so you can drill clean, correctly positioned holes without overcutting. Small tip includes freedom hole for screw shaft: The tip design provides a clearance path for the screw shaft, helping the screw pass smoothly through the lining and align with the substrate. Durable performance: High-quality construction delivers consistent drilling results and dependable service life under normal use. Function and compatibility Function: Drills a precise entry for screws through 9.5 mm (3/8 inch) lining/film and guides the screw shaft. Compatibility: 1/4 inch hex shaft fits standard drill drivers, manual bit holders, and quick-change chucks that accept 1/4 inch hex bits. Typical applications Installing 9.5 mm (3/8 inch) plasterboard or lining to studs where controlled screw entry and alignment are required. Attaching cabinet backs, furniture linings, or paneling made from 9.5 mm material where a clean pilot hole prevents material damage. Through-fastening thin linings into timber or metal framing when you need the screw shaft to pass cleanly through the lining. Usage notes Use with a compatible 1/4 inch hex driver for best stability. Intended for creating pilot/entry holes in 9.5 mm (3/8 inch) lining; match screw type and length to the substrate as required. Specifications Shaft: 1/4 inch hex Compatible lining thickness: 9.5 mm (3/8 inch) Tip feature: small tip includes freedom hole for screw shaft Quality: high quality construction for consistent performance