Multifunctional Countersink Drill Bits Adjustable Depth Aluminum Limit Ring High Precision Carbon Steel Bits Woodworking12.99Buy!$Banggood.comDelivery: in USA ReportSpecifications Material High quality carbon steel and aluminum alloyDrill Diameter Adjustable central drill diameter from 3 2mm to 4 8mmLength Adjustment Depth adjustable from 5mm to 25mmHex Shank more→Diameter 6 35mm 1 4 Drill Bits Included 2 8mm 3 2mm 3 5mm and 4 0mmFeatures 1 Precise Depth AdjustmentDesigned with a measurement scale the drill allows effortless adjustment for drilling depths ranging from 5mm to 25mm ensuring high accuracy for countersinks of variable depths 2 High Performance Drill BitsThe carbon steel drill bits are built for smooth and fast cutting designed to withstand high temperatures and resist corrosion for reliable drilling performance 3 Magnetic Aluminum …