Knarre Zyklop Metal with through-square drive. Slim design for working in very tight spaces. The double ratchet construction allows for a 76-tooth fine-tooth division from 38 robust teeth, with a return angle of only 4.7°. Very smooth direction change due to the non-loosable through-square drive, now also featuring a secure socket locking function. Forged full metal ratchet (chrome-molybdenum) for exceptional durability and long service life.