Rock bit size range and connection type Diameter (inches) API Reg Pin Connection Diameter (inches) API Reg Pin Connection 2.7 8" N rod 6.3 4 - 6.7 8" 3.1 2" 2.15 16 - 3" N rod 7.3 8" 3.1 2" 3.1 8 - 3.1 4" N rod 7.5 8" 4.1 2" 3.1 2 - 3.5 8" 2.3 8" 7.7 8 - 8" 4.1 2" 3.3 4" 2.3 8 Show More...
Rock bit size range and connection type Diameter (inches) API Reg Pin Connection Diameter (inches) API Reg Pin Connection 2.7 8" N rod 6.3 4 - 6.7 8" 3.1 2" 2.15 16 - 3" N rod 7.3 8" 3.1 2" 3.1 8 - 3.1 4" N rod 7.5 8" 4.1 2" 3.1 2 - 3.5 8" 2.3 8" 7.7 8 - 8" 4.1 2" 3.3 4" 2.3 8" 8.1 2 - 8.5 8" 4.1 2" 3.7 8 - 4" 2.3 8" 8.3 4" 4.1 2" 4.1 4 - 4.3 8"" 2.3 8" 9" 4.1 2" 4.1 2 - 4.5 8" 2.3 8" 9.5 8" 6.5 8" 4.3 4 - 4.7 8" 2.7 8" 9.7 8" 6.5 8" 5" 2.7 8" 10.5 8" 6.5 8" 5.1 8 - 5.1 4" 2.7 8" 11" 6.5 8" 5.1 2" 3.1 2" 12.1 4" 6.5 8" 5.5 8 - 5.3 4" 3.1 2" 13.3 4" 6.5 8" 5.7 8" 3.1 2" 14.3 4" 6.5 8" 6 - 6.1 8" 3.1 2" 16" 6.5 8" 6.1 4" 3.1 2" 17.1 2" 6.5 8"