Durable S2 Steel Bits Included – Includes 20 premium S2 steel bits (Phillips, Torx, Hex, Slotted)，a quick-release bit adaptor, a standard 1/4” bit adaptor, and a quick clamp, engineered for strength and longevity Quick Torque Adjustment with Locking Mechanism – Push the locking knob downwards while adjusting to unlock the torque. For torque above 30 in-lb, use the included quick clamp for even faster setting. Designed for precision control and user-friendly operation Reliable and Safe Operation – When the preset torque value is reached, the screwdriver "slips" or free-spins to prevent overtightening, helping avoid damage to delicate components and ensuring proper tension every time Durable Metal Handle – Built with a solid metal handle, this torque screwdriver offers enhanced durability and a premium feel. The sturdy construction ensures a secure grip and long-lasting performance, even under frequent or high-torque use ​​Precision Torque Control, Every Time.​​ This professional torque screwdriver delivers ​​10-80 in-lb adjustable torque in 1 in-lb increments​​, ensuring perfect fastening for gunsmithing, optics, and electronics. Torque Wrench Screwdriver