Micrometer Adjustable "Clicker" Ratchet Torque WrenchCompact, strong, and hard wearing tear-drop ratchet head. Scale stamped on spring tube. Detent-style locking collar. O-ring seal between ratchet head and spring tube. Emits audible click when torque setting is reached. Eliminates speed sensitivity errors. Tool resets automatically when pressure is relieved. Drive Size: 3/8 in; Drive Type: Male Square; Head Type: Pear; Locking Type: Ball; Material: Cold Formed Steel; Measuring System: Inch; Overall Length: 9 1/2 in; Torque: 50.00 in lb [Min], 250.00 in lb [Max]; Torque Increment: 1.000 in lb; Torque Setting: Micrometer; Weight: 0.76 lb.