Features: Achieve precise drilling depth with ease using our adjustable drill stopper- the perfect tool for DIY enthusiasts and professionals alike Made of durable aluminum alloy with a non-slip texture on thesurface, our drill stopper features a nylon inner ring that locks firmly in place to prevent wear and tear on your drill bit. The outer ring is made of aluminum alloy material, which is durable, beautiful and lightweight. Thesurface has anti slip patterns and can be manually tightened, making it simple and practical. The nylon inner ring is easy to lock, not loose, and effectively avoids wear on the locking part of the drill bit. The inner diameter of the limiter can be adjusted and fixed at different positions on the drill bit, accurately controlling the drilling depth. Specifications: Size：approx 5x3x3CM/1.97x1.18x1.18in Material: Aluminum Optional : Mini Adjustable Drill Stop Types 2 To 5 / Adjustable Drill Stop Types 6 to 11 Package Includes: 1PC Aluminum Drill Depth Stop note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you