RANMEI Diamond Core Drill Bits for Hard Stone Concrete Marble Granite Dry/Wet Hole Saws

Features: *Welded Diamond Dry Drilling Core Bits. *Dry or Wet Drilling - use wet will greatly prolong the segment life *Designed for drilling hard granite marble engineering stone concrete brick *Easily operate on Angle Grinder; Need an adapter for drill or other machine such as SDS hex Round plus shank *All-in- wet and dry thread drill *Sintered tooth 3 teeth *Sharp and durable Specifications: Color:black Size:32*450mm 38*450mm 40*450mm 44*450mm 51*450mm 56*450mm 63*450mm 76*450mm 83*450mm(optional) Material: diamond Quantity:1pcs Package Included: 1Pcs Opener Drill Bit