diamond drill,carbide alloy drill, drill, glass drill, tile drill, ceramic drill Detailed Product Description8856E-2 diamond drillDiamond Sinter Drill, Sinistered Core Drill, spec:4-10mm, 12-40mm, 42-70mm, 72-100mm, Diameter from 5mm to 60mm,Diamond Sinter. Drillbag packing diamond drill,carbide alloy drill