Meet Drilling Needs: Use this countersink drill bit kit to meet the drilling needs of a variety of commonly used sizes 1/8x3/8inch; 7/64x3/8inch; 9/64x3/8inch Bi-directional Quick Release: Can sink holes or drive screws; dual-purpose operation; convenient and simple; can be used in a variety of places Adjustable Depth: Hexagonal screw fixing slot, adjustable as needed, clear scale not easy to wear, countersinking holes more accurately Quick Change: The cutter can be changed according to your needs, easy to operate, quick change, save your precious time and improve your working efficiency Wide Application: Countersinking Drill Bit Kit is suitable for bench drills; hand drills and conventional electric drills. Ideal for wood; fibreboard; chipboard; plywood; etc The countersink drill bit set can be countersunk as well as screwed, making it practical and convenient. The depth of the countersink can be adjusted as required. The cutter can be changed quickly to improve working efficiency. Ideal for wood, fibreboard, chipboard, plywood, etc. Multi-purpose: Suitable for bench drills, hand drills and traditional electric drills. Ideal for wood, fibreboard, chipboard, plywood, etc. Long-lasting: Alloy drill bits have incisive cutting edges for smooth drilling. The sturdy construction ensures they stand up to frequent use. Product Name: Countersink Drill Bit Set Applicable models: hand drill/charger/bench drill, etc. Applicable materials: for hardwood deep holes, for drilling screw holes in wood and sinking the screw The actual product may have slight color difference or difference, which not affect the use Colour: Material:Aluminum Alloy Package Contents: 1 x Limit Countersinking Drill 2 x 4-Flute Drill Bits (with center drill) 1 x Hexagonal Wrench 1 x Plastic Ring