Check the listing for details. RAM-B-180-A-202U RAM 9mm Angled Bolt Head Adapter Mount with R.... Color: Black, Condition: New. Listed at 47.94 USD. RAM 9mm Angled Bolt Head Adapter Mount with R... RAM-B-180-A-202U Genuine RAM Products! The RAM-B-180-A-202U consists of a 1 INCHES diameter ball base with 9mm hole, short double socket arm and round base that contains the universal AMPs hole pattern. This mount is often used on motorcycles, attaching to the mirror frame, most commonly found on BMW motorcycles. The mount is designed with a RAM 1 INCHES diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles.socket to socket length 1.75 INCHES hole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES 3-Hole 120-Degree: 1.812 INCHES Diameterball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.88 lb socket to socket length 1.75 INCHES hole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES 3-Hole 120-Degree: 1.812 INCHES Diameter ball size B Size (1 INCHES ) weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lb materials Marine-grade aluminum packaging type Poly Bag Weight 0.88 lb