ITEM NAME:7Pcs 3MM ~ 10MM Countersink Drill Bit Set Carpentry Reamer Woodworking Tool Description Features: -7Pcs set includes bits for drilling pilot holes for screw sizes 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm. -Adjustable counter sleeve depth with wrench.Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew. -In the process of using, can discharge the wood more rapid, sink hole disposable drilled smooth, screw cap perfect embedded in the surface of workpiece. -It is suitable for drilling machines with chuck, for drilling on hard wood or wooden floor. Specification: -Material:Â high speed steel -Color: silver Packing size: 10X5X5cm -Dimension: (Diameter x Length) 3mm x 60mm 4mm x 75mm 5mm x 85mm 6mm x 90mm 7mm x 100mm 8mm x 110mm 10mm x 120mm Package Include: -7Pcs Countersink Drill Bit + 1Pc Wrench as pictures show. Note: -Please be carefully check the goods appearance, size, shape and then compare your original goods before ordering, thank you. -Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. -Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above. Please don't mind, thank you! High quality store for you! 7Pcs 3MM ~ 10MM Countersink Drill Bit Set Carpentry Reamer Woodworking Tool.7Pcs Countersink Drill Bit + 1Pc Wrench as pictures show. -7Pcs set includes bits for drilling pilot holes for screw sizes 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm. 3mm x 60mm. 10mm x 120mm. We'd like to settle any problem in a friendly manner.