Check the listing for details. RAP-B-101-G1U RAM Composite Double Ball Mount with Hardware.... Color: Black, Condition: New. Listed at 38.94 USD. RAM Composite Double Ball Mount with Hardware... RAP-B-101-G1U Genuine RAM Products! hardware included (4) #6-32 x 5/8 INCHES Machine Screws(4) #6-32 x 7/8 INCHES Machine Screws(4) #6-32 x 3/8 INCHES Machine Screws(4) #6-32 Nut Insertsproduct dimensions Overall Height: 5.4 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 High strength compositepackaging type Poly BagWeight 0.2 lb product dimensions Overall Height: 5.4 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 High strength composite packaging type Poly Bag Weight 0.2 lb