SmallRig 15mm Lws Universal Lens Support BSL2681 is designed to remove the weight stress from camera's lens mount when your camera is mounted on separately available 15mm Lws rods. The lens support offers 53.5mm vertical adjustment to fit most lens.The center column attaches to a Y-support which features strap slots on each side for further secure. The height is adjustable via the quick release knob without using tools. The lens support is compatible with lens diameter up to 150mm..