Features: Brand new and high quality Woodworking Drilling Depth Limiter Metric British Drill Bit Limit Fried Dough Twists Drill Bit Fixed Thrust Ring Locking Ring. Metric and British drill bit limit rings, forged from zinc alloy, rust resistant, high strength, and long service life. It can be fixed at different positions of the drill bit, firmly clamped, accurately controlling the drilling depth, convenient operation, and fast positioning. The front and back metric and English systems are integrated, suitable for different styles of drill bits with a diameter of 5-11mm, making installation/disassembly convenient. Attention: Shipping does not include drill bits! Specifications: Material: Zinc Alloy Packaging size: 75mm x 55mm x 15mm Package Includes: 1Set x Drill Locator note: Due to the light and screen setting difference,the items color may be slightly difference from the pictures. Please allow slight dimension difference due to different manual measurement.