Product Features 72-tooth ratchet mechanism Extends to 44 cm and locks Thumb operated reverse switch and quick release button Ergonomic anti-slip bi-material holder for sturdy and secure grip Chrome Vanadium Steel forging for strength & durability Polished chrome surface for maximum corrosion protection Equipped with ball block Technical Data Drive Size: 1/2 inch Number of Teeth: 72 Material: Chrome Vanadium Alloy Steel Finish: Polished Chrome Overall Length: 300 - 440 mm