... of Difficulty processing, improved connectivity strength. 3, a back clamp + rack plunger rod drive mechanism (patented technology), completely ... minOpen Size 95 mmshipments quality 100 kg (220lbs)2. Back clamp Adaptation of the 23/8" ,2 7/8" ,3 ... 116 mmshipments quality 53kg (116.6 lbs)portfolio clamp Dimension 650 x 430 X 550 mmrated pressure ... Supply 80 Lmin (21gpm ZQ127-25Y DRILL PIPE POWER TONG