• metal
• Car roof bar clamp--ideal for road trips and conveniently transporting extra luggage,crossbar clamps for cars
• Roof rack crossbars clips--provides a firm and stable grip on luggage with its innovative clamp design,car topper clamps
• Made for durability: the clamp is constructed using stable materials, ensuring its long-lasting durability,crossbar clips,car topper clips
• Car topper clip--compatible with most car luggage racks, making installation quick and easy,trailer crossbar clips
• Universal design fits car luggage racks: the design of the clamp bar is suitable for use with a wide range of car luggage racks,roof rail clips,crossbar hanger clips