Extractor: three arms.Made of special steel.Galvanised finish.Heavy-duty, long reach.Especially suited for pulling ball bearings, pulleys and gears etc..Spare body.4528M1/B for 4528M1.4528M2/B for 4528M2.4528M345/B for 4528M3, 4528M-4 and 4528M-5.4537K-4528MK Spare arm.Spare spindle.4532-OAB/S for 4528M1 (M14 x 1.5 x 135, SW 17, 190 g).4519-1/S for 4528M2 (M18 x 1.5 x 240, SW 19, 485 g).4519-2/S for 4528M3, 4528M4 and 4528M5 (G1/2" x 14 x 270, SW 22, 730 g).Made of special steel