4145H Modified
Square
Hexagonal
2 ½” to 6”
Top Connection
6 5/8” Reg LH 7 ¾”
4 1/2” Reg LH 5 ¾”
Bottom Connection
NC 26 NC31 NC 38 NC 46 NC50 NC56
Rotary Kelly
Rotary Kelly
4145H Modified
Square
Hexagonal
2 ½” to 6”
Top Connection
6 5/8” Reg LH 7 ¾”
4 1/2” Reg LH 5 ¾”
Bottom Connection
NC 26 NC31 NC 38 NC 46 NC50 NC56