Strong metal clamp for secure holding: Heavy-duty metal construction provides a firm, vibration-resistant grip to keep workpieces steady during cutting, drilling, routing, or assembly tasks. Fits 19 mm and 20 mm holes: Designed to work with both 19-mm and 20-mm bench or fixture holes, making it compatible with a wide range of workbenches, router tables and shop fixtures without modification. Tool-free, quick-adjust hand knob: The user-friendly hand-turn mechanism lets you tighten and release the clamp quickly, so you can reposition workpieces or change setups without tools and with minimal downtime. Reliable performance under load: The clamp holds materials securely to reduce slippage and improve cut and drill accuracy, helping you finish jobs faster and with fewer mistakes. Easy installation and removal: Simple plug-in design for standard 19/20-mm holes allows fast mounting and removal when changing workstations or storing the clamp. Practical for many materials and tasks: Works well with wood, plywood, MDF, plastics and light metals in both hobby and professional workshops. Use scenarios: Woodworking bench: Hold boards or panels firmly while sawing, planing or routing to prevent movement and improve cut quality. Assembly and glue-ups: Keep parts aligned and clamped during glue drying or while fastening hardware, reducing the need for additional clamps. Light metalworking and drilling: Secure small metal parts for accurate drilling or deburring on benches with standard 19/20-mm holes. Why choose this clamp: Solves common shop problems like slippage, long setup times, and tool interference by offering a compact, robust clamp that installs into standard bench holes and adjusts quickly by hand. Compatible with existing benches and fixtures thanks to its 19/20-mm fit, so you don’t need new tooling or adapters. What you get: One durable metal clamp with a quick-adjust hand knob, compatible with 19-mm and 20-mm bench holes, built for reliable holding during cutting and assembly tasks.