... drill bits for granite, marble, concreteSizeDia1-3/4" (45mm)SegmentH7mmThreadMale Thread & Female ThreadThread SizeM14", 5/8-11", 1-1/4", 1-3/4 ... "LengthLess than 100mmPlace of OriginalXiamen, ChinaPackagePaper box per pc, in cartonDelivery Time3-5 WORKDAYSFeatureMost Aggressive drill ... tools..We produce: diamond segment, saw blade, drill bits, polishing pads, wire saw, grinding cup wheel ...