Product Weight: 499 g Product Dimensions: Overall Height: 7.35 Socket-to-Socket Length: 4.66 Hole Pattern: 4-Hole AMPS: 1.181 x 1.496|3-Hole 120-Degree: 1.812 Diameter AMPS 4-Hole 3-Hole 120 Degree (Small) Plate Size: 2.5 Diameter Weight Capacity: Standard Use: 1814.37 gramss|Heavy-Duty Use: 1360.78 gramss Materials: Marine-grade aluminum Packaging Type: Poly Bag Mounting Type: Drill Down Ball & Socket Size: C Size 1.5 (Holds 1814.37 gramss) Socket Arm Length: Medium Arm Vehicle Type: Power Boat Component parts: RAM-201U RAM-202U Product_Feature: Drill-down mounting solution; choose either round plate featuring the AMPS hole pattern for attachment to compatible device holders Includes two round ball bases and C size medium length double socket arm; ball and socket technology allows for near-infinite adjustability Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments Backed by a lifetime warranty Socket To Socket Length: 4.66 Ball Size: C Size (1.5)