Check the listing for details. RAM-202-G4U RAM Ball Adapter with #8-32 Hardware for Garm.... Color: Black, Condition: New. Listed at 31.44 USD. RAM Ball Adapter with #8-32 Hardware for Garm... RAM-202-G4U Genuine RAM Products! The RAM-202-G4U consists of a 1.5 INCHES diameter rubber ball connected to a flat 2.5 INCHES diameter base. This mount has pre-drilled holes, including the universal AMPS hole pattern. Included are 3x (#8-32 x 5/8" PH PD Mach Screws) and 3x (#8-32 SS Nylock Nuts) that will connect the RAM-202-G4U to the bottom of the Garmin echo.hardware included (3) #8-32 x 5/8 INCHES Machine Screws(3) #8-32 Nylock Nutshole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES 3-Hole 120-Degree: 1.812 INCHES Diameterball size C Size (1.5 INCHES )weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbsmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.25 lb hardware included (3) #8-32 x 5/8 INCHES Machine Screws(3) #8-32 Nylock Nuts hole pattern 4-Hole AMPS: 1.181 INCHES x 1.496 INCHES 3-Hole 120-Degree: 1.812 INCHES Diameter ball size C Size (1.5 INCHES ) weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbs materials Marine-grade aluminum packaging type Poly Bag Weight 0.25 lb