Extractor: 2 arms - heavy duty Finish: Galvanised Material: Special steel Especially suited for pulling ball bearings, pulleys, gears, etc. Spare body 4537-1/B for 4537-1 4537-2/B for 4537-2 4537-34/B for 4537-3 and 4537-4 4537K: Spare arm Spare spindle 4532-OAB/S for 4537-1 (M14x1.5x135, SW 17, 190 g) 4519-1/S for 4537-2 (M18x1.5x240, SW 19, 485 g) 4519-2/S for 4537-3 & 4537-4 (G1/2"x14x270, SW 22, 730 g)