Features 1、RUGGED MATERIAL: The metal AMPS adapter plate feature rugged marine grade aluminum alloy, CNC machining and Class III hard anodized surface finishing to ensure reliability and durability in the most challenging environments 2、CONSTRUCTION INFORMATION: The mounting base is made of a 1in non slip rubber ball attached to a round base and include a variety of pre drilled holes with industry standard AMPS hole patterns 3、APPLICABLE MODEL: Metal AMPS round adapter plate is compatible with base B size 1in (about 2.5cm) ball double socket arm, useful and practical 4、WIDE APPLICATION: The ball mount AMPS adapter is ideal for use as a mounting base for boats, kayaks, semi trucks, cars, trucks, treadmills and various off road vehicles 5、RUBBER JOINTS: Ball joints of drill mount ball plate base are coated in rubber material, which is elastic, wear resistant, not easily discouraged, come with 4 holes Item Type: Metal AMPS Adapter Plate Material: Aluminum and rubber Package List 1 x Metal AMPS Adapter Plate Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!