Standard with 1/4" and 3/8" socket adaptors, this tool is equipped with a lock-pin style ratchet mechanism, enabling use as a passthrough ratchet wrench to tighten 13mm nuts. Features: Variable speed control by trigger Electric brake Forward / reverse rotation LED job light Supplied with two socket adapters: 6.35mm (1/4") square drive and 9.5mm (3/8") square drive By removing the socket adapter, you can convert this model to a pass-through. Features: Variable speed control by trigger Electric brake Forward / reverse rotation LED job light Supplied with two socket adapters: 6.35mm (1/4") square drive and 9.5mm (3/8") square drive By removing the socket adapter, you can convert this model to a pass-through ratchet wrench, which is ideal for tightening 13mm nuts onto long threaded bolts such as a threaded rod. Bare unit - battery and charger not included.