1, Stable Clamping: Pumping flexion surface installation artifact, clamping stable, fast and convenient installation. Precision threaded rod, smooth moving, large torque. Movable clamping head, clamping smooth, do not hurt objects. 2, Strong & Smooth: Pumping flexion surface installation auxiliary clamping structure to understand it, to better use it. Round plum knob, strong, smooth and doesn't hurt your hands. 3, Stainless Steel Material: Strict selection of stainless steel, clamping object, not easy to deformation. Surface coating, durable treatment. The anti-slip barrier pad is not easy to damage the material, the clamping surface is flat, the force is even, and the object is not hurt. 4, Thickened Design: The thickened clamping surface is stable and not deformed. It has stronger bearing capacity and is not easy to deformation and fracture. No need for extra clamp, including clamp itself, quick locating and fastening 5, Comfortable Grip: Soft edge plum knob grip comfortable, the overall curved design, rotation time and labor saving. Drilling depth adjustable, adjust the distance between the limit ring and the drill sleeve to determine the depth of the hole. Colour:As Shown Material:Metal Specification: Basic Package Contents: 4 x Clamp Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.