Sealey torque multiplier 1 2 sq drive sealey premier ak629 robust construction with 1 2in sq drive female input and 3 4in sq drive male output multiplication achieved by planetary gear train with a gear ratio of 3 3 1 compatible with wide range of drive tools including torque and ratchet wrenches adjustable length reaction arm makes it ideal for limited access use sealey ak629 torque multiplier 1 2 sq drive