Check the listing for details. RAM-B-101-G4 RAM Double Ball Mount with Hardware for Garmi.... Color: Black, Condition: New. Listed at 49.44 USD. RAM Double Ball Mount with Hardware for Garmi... RAM-B-101-G4 Genuine RAM Products! The RAM-B-101-G4 consists of a double socket arm, 2.5 INCHES diameter round base with the universal AMPS hole pattern and round adapter base that attaches directly to the bottom of the Garmin echo and Striker 4 Series. Designed into the mount is a 1 INCHES diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm; this with RAM's rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. Included is hardware that is used to attach the Garmin echo to the RAM Mount.hardware included (3) #8-32 x 5/8 INCHES Machine Screws(3) #8-32 Nylock Nutsproduct dimensions Overall Height: 5 INCHES socket to socket length 3 INCHES hole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES 3-Hole 120-Degree: 1.812 INCHES Diameterplate size 2.5 INCHES Diameterball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials Marine-grade aluminumpackaging type Retail BagWeight 0.75 lb hardware included (3) #8-32 x 5/8 INCHES Machine Screws(3) #8-32 Nylock Nuts product dimensions Overall Height: 5 INCHES socket to socket length 3 INCHES hole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES 3-Hole 120-Degree: 1.812 INCHES Diameter plate size 2.5 INCHES Diameter ball size B Size (1 INCHES ) weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lb materials Marine-grade aluminum packaging type Retail Bag Weight 0.75 lb