U shaped buckle, opening the pad, widely used in various steel wood furniture, metal furniture, fitness equipment, racks, shelves, students bed, computer desk, beach chair, specifications of phi 12, Phi 16, Phi 19, Phi 22, Phi 25, Phi 32MM, random color to black, a large number of spot if other colors can be customized! Welcome to inquire, order, also can sample to figure processing open mold, I only accept mold cost! Product price discount!!