Metal locking clip belt, holds the base of the safety seat firmly to prevent the belt from slipping. Strictly control the opening force of each buckle, to prevent the child from accidentally unlocking it. Product standard: Buckle tensile force test according to European standard ECER44. Passed 5000 fatigue tests. - Superior quality. Material: Zinc alloy, plastic. Length: about 23cm Width: about 9cm. Passed 5000 fatigue tests. It is a clip for the seat belts of a child car seat. Curved seat belt, helps in positioning and ensures the safety of the child. child. Please strictly control the opening force of each buckle, to prevent the child from accidentally unlocking. Contents: 1 safety buckle for the child car seat strap.