Features high quality material made of high quality high speed steel with high hardness and wear resistance unique combination a variety of multi size woodworking drill bits are combined into a set for you to choose from wide application suitable for diy household and general construction engineering use very suitable for wood fiberboard particle board plywood plastic pvc and soft metals suitable for hand drills bench drills and electric drills easy to carry plastic box with bubble film packaging convenient for you to organize and carry and is not easy to damage during transportation specification 7pcs 3 pointed countersink drill bit materialhigh carbon steelsize3mm 4mm 5mm 6mm 7mm 8mm 10mmfordrilling pilot holes the drill bit large chip flute and five edge chamfers allows faster and easier discharge of sawdust with the l shape hexagon key provided you could easily remove five bevel chamfer or adjust counter sleeve depth and drilling depth featureshigh hardness and wear resistancesizemodel mm drill diameter mm drill work length mm chamfering diameter mm overall length mm 3mm33816524mm45016675mm56216846mm66716897mm785161038mm8801610710mm1087161206pcs 5 flute countersink drill bitsmaterialhigh speed steelsize6mm 1 4 inch 8mm 5 16 inch 9mm 3 8 inch 12mm 1 2 inch 16mm 5 8 inch 19mm 3 4 inch great forsinking 90 degree holes into wood and soft metals countersunk screws and fixings idea for wooden planks fiberboard particle board
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