Information HOLE PATTERN: 2-Hole AMPS: 1.912" SOCKET TO SOCKET LENGTH: 3" WEIGHT CAPACITY: 2-Hole AMPS: 1.912" Standard Use: 2 lbs Heavy-Duty Use: 1 lb MATERIALS: 2-Hole AMPS: 1.912" High strength composite PACKAGING TYPE: 2-Hole AMPS: 1.912" Poly Bag WEIGHT: 2-Hole AMPS: 1.912" 0.37 lb ADDITIONAL INFORMATION: 2-Hole AMPS: 1.912" The RAM Mirror-Mate™ will not work with vehicles that have an OnStar system or rain sensor installed. RAM recommends using the proper Ford rearview mirror removal tool to remove the factory mirror. Hardware Breakdown RAM® Mirror-Mate™ Ball Base for GM Vehicles - RAP-B-369BU & RAM® Composite Double Socket Arm - B Size Medium - RAP-B-201U & RAM® Ball Adapter with 1/4"-20 Threaded Stud for Action Cameras - B Size - RAP-B-366U Compatibility COMPATIBLE DEVICES Cameras: that contain 1/4"-20 Female Threaded Hole