PETOL SURGRIP FRICTION VISES provide oil field pump manufacturers and pump repair shops with a friction vise having superior noncrushing and nonmarring features for use in final assembly or repair of sub-surface pumps. SURGRIP Friction Vises come in two sizes, ZV35-52 and ZV55-54. Interchangeable aluminum bushings are available to meet specific O.D. requirements. The ZV55-54 PETOL SURGRIP Friction Vise can be fitted with special adaptor bushings enabling it to handle all the smaller O.D.'s of the ZV35-52. Specifications: Weight: 2 ozs. Note: 4 req'd. per vise. Vise Plate, Vise Plate Bolt & Nuts, and Vise Bushings must be ordered separately.