The GB20SF is a hydraulic installation tools designed specifically for the efficient installation of 1/2”, 5/8”, 12mm, 14mm & 16mm diameter Bobtail® fasteners. It weighs approximately 11 lbs. (4.99 kg) and can be operated in any position. It has a 2.00” (5.08cm) fastener stroke and a maximum rated pull load of 20,650 lbs. (92kN) @ 7,000 psi. (483 bar) and a maximum rated return load of 9,500 lbs. (42 kN) @ 5000 psi. (345 bar).

The GB20SF (Electric actuated) installation tool operates on hydraulic pressure developed by the GB947 Powerunit. Set both pull and return pressures per instruction manual for diameter of fastener being installed. The tool comes equipped with 2 feet (.61 m) of hydraulic hoses and couplings, electric switch and cord.