KS Tools 516.1428 Rotary Knob Change Square 1/2 + 3/8 Inch High-Quality Square Wrench for Torque Wrench I Square Drive According to DIN 3122

• Easy screwing: the square extension has a ribbed head that allows a faster pre-fitting of the screw connection. In this way, working with a 4-sided key is much easier
• Suitable for torque wrenches: the square socket wrench is suitable for tools such as the Ergotorqueprecision torque wrench
• Perfect handling: the square wrench sits securely and firmly thanks to the rotary knob. Accidental pulling out is excluded. Nevertheless, it can be quickly released thanks to the push button quick release function on the ratchet head
• DIN 3120-ISO 1174: The square drive is certified according to DIN 3120-ISO 1174 and meets high demands on use in the industry
• KS TOOLS: As the world's leading manufacturer of professional tools and workshop equipment, we offer first-class products with great flexibility. A convincing range of hand tools, special car tools, sanitary tools and much more

With ribbing for faster pre-fitting of the screw connection. Prevents unwanted pulling out of the square Square drive according to DIN 3120 - ISO 1174 with ball lock. With push-button quick release function on the ratchet head.