Neewer DSLR Dual Handle Hand Grip for Shoulder Pad Chest Steady 15mm Rail Rod Rig Support System Be used with any industry standard 15mm rod rail system. The rail mounting adapter can be adjusted at desired distance on the 15mm rods. Lockable in the required position. Each handle can move together pushing away from your body or towards your body. Each handle can move independently so you can have one grip further away from your body then the other grip.