ITEM NAME:5xHSS Countersink Drill Bit Set Screw Woodworking Chamfer Tool with Standard Hex Descriptio n Description: 100% New High Quality Special designed steel counter sleeve countersinks or counter bores pilot hole Adjustable counter sleeve depth with Allen wrench. Standard hex shank is quick change compatible. Drill and countersink for wood screws without changing bits. Specifications: specificationï ¼Å¡ 5#         1.98mm 6#       2.38mm 8#       2.78mm 10#       3.175mm 12#       3.56mm Package Included: 5 x Countersink Drill Bits 1 x 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. We offer you what you need! 5xHSS Countersink Drill Bit Set Screw Woodworking Chamfer Tool with Standard Hex.Drill and countersink for wood screws without changing bits. 5 x Countersink Drill Bits. Standard hex shank is quick change compatible. We'd like to settle any problem in a friendly manner. Special designed steel counter sleeve countersinks or counter bores pilot hole.