The KONDOR BLUE ARRI Anti-Twist Rod Clamp addresses several rigging challenges in one simple design: -The mounting hardware is captive for easy removal without fear of loss -The 3mm anti-twist pins can be repositioned to your desired orientation and the pins can be stored within the clamp if not needed -The design is as low profile and low weight as possible -The M4 tightening knob can be repositioned -The angle of the M4 knob makes mounting/removing to a camera easier -It can also be mounted to via 3/8"-16 -KONDOR BLUE also offers a range of 15mm rods and rosette accessories. TECH SPECS -Mounting: 1/4"-20 and 3/8"-16 bolts, 3/8"-16 female thread -Dimensions: 30mm L x 22mm W x 28mm T -Weight: 25.5g/.9 oz -2x 3mm x 3mm anti-twist pins with M2 thread; 1.5mm hex -Anti-twist pin holes 15mm on-center