Custom fit for DCF850 and DCF850N drivers: Designed to fit DCF850 and DCF850N drivers, providing a snug engagement that improves control, reduces slippage, and enhances overall performance. Robust alloy steel construction: Made from alloy steel for durability; built to withstand tough tasks and extend service life by reducing the need for frequent replacements. Wide application range: Suitable for woodworking, metalworking, and various DIY projects; compatible with standard screws and a wide range of drill accessories. Enhanced safety features: Nonslip handle and secure connection design; prioritizes user safety for both professionals and DIY enthusiasts. Use scenarios Drilling pilot holes for furniture assembly in wood, helping reduce splitting and improving hole accuracy when used with a DCF850 or DCF850N driver. Drilling holes in brackets and metal components for mounting hardware or repairs, with durable bits designed for tough tasks. General DIY projects and home improvements requiring reliable drilling and screwdriving performance, such as shelving installation or fixture mounting.