Illinois Industrial Tool - IIT 51050 3 Piece Gear pullers set includes adjustable universal 3", 4", and 6" gear pullers that will transform even the toughest jobs to a simple victory. Smooth lightning fast removal of gears is a snap using either a 14 or 15 mm socket or wrench on the acme-threaded steel drive. Constructed from High-Strength forged and hardened steel, this is the clear choice for years of reliable use. Look for other gear pullers sets in the iit tools family.