DIN, JIS, AISI, API
Tungsten Carbide
Roll Forged, Milled
Ssds-Plus,SDS-Max,Spline ,Hex,Four Square
Sandblasted, Zinc\Nickel\ Chrome Plated
Single or Double Fulte
45# Carbon Steel
Flat,Cross,W
Drilling Concrete, Granite, Brick, Block, Tile,Mar
One PC in PVC Bag or Plastic Tube
Danyang City, Jiangsu Province, China