WL Type Integral 3-Spiral Blade Stabilizer, WL Type Integral 4-Spiral Blade Stabilizer (string type, near bit type ). The working hardfacing surface (also called as wall contact )materials available separately are (1) carbide insert, (2) Inserted diamond compound, (3) Low temperature brazing tungsten carbide slug, (4) Surface bead welding abrasive welding rod, etc.Bit size (in) Working OD OD of body ID Length Thread code on both ends String type Near bit type Top Down Top end Down end 6 152.2 121 51 1200 NC38 3 1/2 ″ REG 6 1/4 158.7 6 1/2 165.1 7 1/2 190.5 159 57 1600 NC46 4 1/2 ″ REG 7 7/8 200 8 3/8 212.7 159 165 71 1600 1800 NC46 NC50 8 1/2 215.2 159 165 178 8 3/4 222.2 9 1/2 241.3 178 197 1600 NC50 NC50 NC50 9 5/8 244.5 1800 6 5/8 ″ REG 9 7/8 250.8 12 1/4 311.2 203 229 76 1800 NC56 3 1/2 ″ REG NC56 6 1/2 ″ REG NC56 3 1/2 ″ REG 6 5/8 ″ REG 17 1/2 444.5 229 241.3 2000 2200 NC61 7 5/8 ″ REG NC61 7 5/8 ″ REG NC61 7 5/8 ″ REG NC61 7 5/8 ″ REG 24 711.2 26 660.4 28 711.2
