MIARHB 4 Pcs/Set Deburring Countersink Drill Bit Taper Hole Steel Aluminum Countersunk

4 Pcs/Set Deburring Countersink Drill Taper Hole Steel Aluminum Countersunk Head Chamfering Tool 2-5-10-15-20mm Feature: 100% brand new and high quality Model Number: 2-5 5-10 10-15 15-20 DIY supplies Metal Working Use: Metal Drilling Material: High Speed Steel Type: Countersink Drill Bit Size:2-5:6*10*45mm 5-10:8*14*49mm 10-15:10*21*64mm 15-20:12*28*84mm Welded taper for chatter-free deburring and counter sinking. made of 90 ° HSS content. Through lock chip removal prevents chips from clogging in workpiece. Gives best results at low cutting speeds in steel wood and plastics and light metals. This 4 piece Zinc and Deburring Tool Set is ideal for cutting through metal wood and plastic quickly and easily When processing the need to add water or cold oil can effectively extend the service life of the drill or drill will burn! This product must operate on the bench drill as the hand drill operation the speed should be slow do not shake will affect differently the bevel effect. Use in hardness 25 ° below the workpiece such as aluminum plate thin iron plate insulation boards PVC board wood. There is 1 ~ 2cm error because munual measurement Posted by horizontal. Package Include: 4 Pcs Galvanizing Dril Bits