Feature: 1. Specifications: This set includes 5 replaceable countersunk drill bits, with sizes of 3/16x1/2in, 1/8x3/8in, 11/64x1/2in, 5/32x3/8in, 9/64x3/8in; With 82 degree countersunk hole, suitable for woodworking drilling 2. Adjustable Depth Stop: Equipped with adjustable bit depth stop, the countersunk drill bit can be installed on it for use. You can set it to meet the different depth requirements of countersunk and drilling tasks 3. High Efficiency: The guide drill bit is equipped with spiral chip groove to ensure fast cutting; Incisive metal edges can form smooth countersunk holes, which is suitable for 82 degree imperial standard screws 4. Quick Release: The quick release hex shank design allows the drill bit to effortlessly perform drilling and screwdriver operations without the need for additional tools, improving mobility efficiency and saving time 5. Applicable Range: These countersunk drill bits can be installed on bench drill, hand drill, or rechargeable drill, and suitable for countersunking holes in wood, fiberboard, particleboard, plywood, and more Specification: Item Type: Countersink Drill Bit Set Material: Aluminum Alloy Body, 6542 HSS Head Specification: 4.8x12.7mm(3/16x1/2in), 4.4x12.7mm(11/64x1/2in), 4.0x9.5mm(5/32x3/8in), 3.6x9.5mm(9/64x3/8in) Applicable Device: Hand Drill, Rechargeable Drill, Bench Drill, etc. Applicable Materials: Suitable for drilling deep holes in hard wood, to drill screw holes on wood and sink screw heads. Package List: 5 x Countersink Drill Bits 1 x Depth Stop 1 x Wrench 1 x Storage Box