Check the listing for details. RAM-B-408-112-15U RAM Torque Large Rail Base - B Size.... Color: Black, Condition: New. Listed at 36.94 USD. RAM Torque Large Rail Base - B Size... RAM-B-408-112-15U Genuine RAM Products! The large version of the RAM Torque handlebar mounting base features a 1 INCHES B size RAM rubber ball and is compatible with rails 1 1/8" to 1 1/2 INCHES in diameter. Sizing inserts are included to provide a tight fit while also protecting the mounting surface. The large RAM Torque mounting base also includes nylon-insert lock nuts to prevent loosening in high vibration environments.hardware included (2) #10-24 x 1 INCHES Socket Head Cap Screws(2) #10-24 Nylock Nuts(2) 1.12 INCHES Split Reducing Bushings(2) 1.27 INCHES Split Reducing Bushings(1) 5/32 INCHES Hex Key Wrench(1) 127mm x 17mm Rubber Adhesive Stripclamp range 1.125 INCHES - 1.5 INCHES diameterball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.3 lb hardware included (2) #10-24 x 1 INCHES Socket Head Cap Screws(2) #10-24 Nylock Nuts(2) 1.12 INCHES Split Reducing Bushings(2) 1.27 INCHES Split Reducing Bushings(1) 5/32 INCHES Hex Key Wrench(1) 127mm x 17mm Rubber Adhesive Strip clamp range 1.125 INCHES - 1.5 INCHES diameter ball size B Size (1 INCHES ) weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lb materials Marine-grade aluminum packaging type Poly Bag Weight 0.3 lb