Specification:<br /><br />    Brand new<br /><br />    Color: as picture shows<br /><br />    Material: HSS drill 4241<br /><br />    Black chamfer drill body material: steel #45<br /><br />    Diameter of Chamfer: 15.8mm<br /><br />    Shank: 1/4 hex shank<br /><br />    Size(approx. ): 3mm x 60mm(L) / 4mm x 75mm(L) / 5mm x 85mm(L) / 6mm x 93mm(L)<br /><br />    Four piece set includes bits for drilling pilot holes for screw sizes 3mm， 4mm， 5mm， 6mm<br /><br />    Special designed steel counter sleeve countersinks or counter bores pilot hole<br /><br />    Adjustable counter sleeve depth with wrench<br /><br />    Drill and countersink for wood screws without changing bits<br /><br />    Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew<br /><br />    Chamfer is 5 flutes， 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<br /><br />Package included:<br /><br />    4pcs x woodworking chamfer<br /><br />    1pc x hex shank<br /><br />Note:<br /><br />    Please allow0.5-1cm errors due to manual measurement<br /><br />    Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same