Check the listing for details. RAM-102U RAM Double Diamond Plate Mount - C Size Mediu.... Color: Black, Condition: New. Listed at 61.94 USD. RAM Double Diamond Plate Mount - C Size Mediu... RAM-102U Genuine RAM Products! The RAM-102U consists of a medium length double socket arm as well as two diamond plates with the universal 2 hole AMPS pattern.product dimensions Overall Height: 7.35 INCHES socket to socket length 4.66 INCHES hole pattern 2-Hole AMPS 1.912 INCHES plate size 2.43 INCHES x 1.31 INCHES ball size C Size (1.5 INCHES )weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbsmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.44 lb product dimensions Overall Height: 7.35 INCHES socket to socket length 4.66 INCHES hole pattern 2-Hole AMPS 1.912 INCHES plate size 2.43 INCHES x 1.31 INCHES 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 0.44 lb