Description: Product Type: Motorcycle double socket arm adjustment and fixation mounting base accessories.Material: Made of aluminum alloy and 304 stainless steel material to ensure durability and reliability, high toughness and no deformation.Easy Installation: Attaches to the left or right side of the handlebar clutch brake and fixes a 1 inch diameter mounting ball. Screw mounting makes installation easy and convenient.Universal: Compatible with a variety of brackets and fixed ball joints, compatible with 1inch/25.4mm ball mounting base and motorcycle bike phone holder, suitable for motorcycles, cars, ships.Size: 8.55cmx5.52cm/3.37inchx2.17inch Specification: Material: Alunimum alloy Size Chart: 8.55cmx5.52cm/3.37inchx2.17inch Package Includes: 1 PieceDouble Socket Arm Note: Please allow slightly errors due to manual measurement and different monitors.