China AISI 4145H Square Kelly Manufacturer Landee offers AISI 4145H Square Kelly, API SPEC 5DP, SPEC 7-1, 6-5/8REG-LH-NC50, 25.4mm, 133.4 * 16.46mm.
China AISI 4145H Hexagonal Kelly Manufacturer Landee offers AISI 4145H Hexagonal Kelly, API SPEC 5DP, SPEC 7-1,133.4*16.46, 6-5/8REG-LH-NC50, 31mm.