Product Name: Weldon Shank High Speed Steel Countersink Drill Bit Model NO.: TCHX Usage: metal Drilling Material: High Speed Steel Type: Countersink Drill Bit Length: Other Customized: Customized Shank Type: Weldon Shank Shank Diameter: 19.05mm Treatment: All-Ground Performance: Better Endurance Trademark: CHTOOLS Transport Package: Plastic Box Specification: 19.05mm Origin: China HS Code: 8207509000 Product Description Weldon shank high speed steel countersink drill bit1. Selects of the super tough high-speed steel.2. Supply three-edges and multi-edge.3. Suitable for each kind of magnetic drilling machine and pistol drill to chamfer.TypeSizeTCHX25*45*90TCHX30*47*90TCHX40*52*90TCHX50*57*90TCHX55*60*90