This heavy-duty air chuck is designed to withstand constant use in industrial settings. Featuring a robust steel construction, the lock-on chuck securely holds air tools with its sturdy 1/4" NPT connection. With easy one-hand operation, technicians can quickly attach or remove impact wrenches, grinders, sanders and other pneumatic tools without fumbling with separate connectors. Tool changes are simple thanks to the chucks reliable lock-on mechanism. To ensure a long service life even under extreme conditions, all wearing parts have hardened steel surfaces. With its ability to deliver compressed air at high flow rates, this chuck keeps air tools powered up for all-day productivity on manufacturing floors and worksites.