ITEM NAME:8xCountersink Drill Bit Adjustable Depth Stop Collar Woodworking Drilling Hot Descriptio n Description: Features: Drill Limited ring, clamping device, positioner. Works with both standard and brad-point bits. Setscrew type collar will not damage bits. Positively locks anywhere along the bit. Hardened and Tampered. High Carbon Steel Drills. Specifications: Specification: Brand new Type: stop collar Color: as picture shows Sizes: 3mm 4mm 5mm 6mm 8mm 10mm 12mm 16mm Quantity: 8pcs per set Drill Limited ring, clamping device, positioner. Works with both standard and brad-point bits. Setscrew type collar will not damage bits. Positively locks anywhere along the bit. Hardened and Tampered. High Carbon Steel Drills. Package Included: Package included: 8 x stop collar 1 x hex wrench Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. High quality buy, happy buyï ¼ 8xCountersink Drill Bit Adjustable Depth Stop Collar Woodworking Drilling Hot.Drill Limited ring, clamping device, positioner. Works with both standard and brad-point bits. Type: stop collar. We'd like to settle any problem in a friendly manner. Positively locks anywhere along the bit.