Key benefits Precise, repeatable pilot holes and screw seating without changing bits for different screw lengths. Fast, clean drilling with improved centering to reduce slipping and misaligned holes. Durable performance under demanding jobsite conditions thanks to tungsten steel with YG8 carbide. Main features and specifications Adjustable hole diameters: 2.8 mm to 4.0 mm. Adjustable cutting height / depth range: 2.5 mm to 10.5 mm. One-piece construction made from tungsten steel with YG8 carbide for long life and consistent cutting. Simple, tool-free height adjustment: secure settings with the fastening screw for smooth, stable operation. How this product solves common problems Eliminates repeated bit changes: the adjustable cutting height covers multiple screw lengths, saving time during installation and assembly. Prevents cam-out and wandering: the quick, smooth design and improved centering produce accurate holes so screws start straight. Maintains performance in tough conditions: carbide cutting edges hold their shape and stay sharp longer, reducing rework and downtime. Compatibility and function Designed for creating pilot holes and precise screw entry points where 2.8–4.0 mm diameters and 2.5–10.5 mm depths are required. Works as a single adjustable solution for a range of screw lengths and installation tasks without swapping bits. Typical use scenarios Furniture assembly: set a reliable pilot hole and depth for consistent screw seating across repeated parts. Cabinet and fixture installation: create centered screw entry holes quickly and reduce slippage on visible surfaces. Small carpentry or finish work: adjust depth for varying screw lengths to avoid splitting thin panels or over-penetration. Performance and care The tungsten steel body with YG8 carbide cutting edges provides stable cutting performance and long wear life. Keep the fastening screw properly tightened after adjusting the cutting height to ensure consistent hole depth and prevent movement. Inspect cutting edges periodically and replace if chipped or excessively worn to maintain hole quality. What you get One adjustable drill/cutter with 2.8–4.0 mm hole range and 2.5–10.5 mm cutting height adjustment, constructed from tungsten steel with YG8 carbide, with a fastening screw for secure settings.