Free Express Shipping! SHAPE Gimbal Accessory Clamp for 30mm Rod 30mm Rod Clamp, Mounts Accessory on Gimbal, 1 x 1/4"-20 Captive Screw, 1 x Cold Shoe Mount, 1/4"-20 & 3/8"-16 Anti-Twist Threads, Thumb-Lever Fastener, Aluminum Construction