Important: Lead time on this item is currently about 3 weeks. Please contact us for up-to-date info. Features: Easy, fast & accurate positioning. Holds up to 22lbs (10 kilograms), with a radius of 23.5" Inches (600 mm). One knob allows for simultaneous tightening / releasing of all 3 joints. Uses a maintenance-free, mechanical central tightening system. Quick, stepless lock. High-quality chrome plated alloy. Swiss made. ROHS and REACH compliant. Dimensions (mm) [see 2nd picture]: L=622 L1=358 D1=24 L2=264 D2=20 Threads [see 2nd picture]: M1=M12 M2=M12 Clamp 1 Info: Model: KT3 Max Clamp Opening (mm): 75 Thread: M12 Material: Steel Clamp 2 Info: Model: KT4 Max Clamp Opening (mm): 110 Thread: M12 Material: Steel The Fisso articulated workpiece positioning arm has a 23.5" Radius and can hold parts or components up to 22lbs. It includes the clamps for the head and the base. To operate, simply clamp the base to your work piece or workbench, then clamp the head to the work piece. Next, position everything as you'd like it and twist the knob on the side of the arm. All 3 joints will go rigid and not move until you twist the knob back the other way. Included In this Kit: 1.630 - Fisso Classic 6300-62 Chrome Articulated Arm 5.150 - Fisso KT2 Clamp 5.160 - Fisso KT3 Clamp Still have questions? You can contact us, or take a look at the Fisso Resource Center.