Check the listing for details. RAM-HOL-UN7B-235U RAM X-Grip Phone Mount with Double U-Bolt Bas.... Color: Black, Condition: New. Listed at 74.94 USD. RAM X-Grip Phone Mount with Double U-Bolt Bas... RAM-HOL-UN7B-235U Genuine RAM Products! hardware included (1) Optional Tether(1) Glue Tube for Rubber Caps(2) 1/4 INCHES -20 U-Bolts for 1 INCHES - 1.25 INCHES Rails(4) 1/4 INCHES -20 Nylock Nuts(4) Rubber Capsholder dimensions Width Range: 1.875 INCHES - 3.25 INCHES Depth Range: .875 INCHES maxclamp range 1 INCHES - 1.25 INCHES diameterball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials Marine-grade aluminumHigh strength compositeStainless steelpackaging type Poly BagWeight 0.8 lb holder dimensions Width Range: 1.875 INCHES - 3.25 INCHES Depth Range: .875 INCHES max clamp range 1 INCHES - 1.25 INCHES diameter ball size B Size (1 INCHES ) weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lb materials Marine-grade aluminumHigh strength compositeStainless steel packaging type Poly Bag Weight 0.8 lb