This fixed ring drill bit positioner is a must-have for any serious woodworker or metalworker. Its carbon steel construction ensures it can withstand heavy use, allows for precise depth settings. This tool helps prevent over-drilling, ensuring that each hole is drilled to the exact required depth, thus maintaining the integrity of your projects and delivering professional results. Features -Color:Silver -Material:Carbon steel -Size:1.60X1.60X0.80cm/0.63X0.63X0.31in -Exceptional Material Choice: The drill stop collar is crafted from carbon steel, ensuring durability and performance for your woodworking projects -Easy Installation Process: Each drill stop collar set includes a convenient wrench, effortless to install and adjust according to your drilling needs -Precision : This drill bit stop collar set allows for accurate and consistent drilling depths, preventing both over-drilling and under-drilling, ideal for repetitive tasks -Versatile Adjustment Capability: Quickly and easily adjust the drill stop bit collar set to any position on the drill bit shaft, enhancing flexibility in your work -Designed for Professionals: The drill stop collar is nice for carpenters and DIY enthusiasts alike, making it an essential tool for achieving precise and reliable drilling results Package list: 8 x shaft stop collars 1 x wrench