Check the listing for details. RAM-408-75-1U RAM Torque Medium Rail Base - C Size.... Color: Black, Condition: New. Listed at 39.44 USD. RAM Torque Medium Rail Base - C Size... RAM-408-75-1U Genuine RAM Products! The RAM Torque handlebar and rail mounting base has a 1.5" rubber ball and accommodates bars 3/4" to 1" in diameter. Sizing inserts are included to provide a snug fit and protection of the rail. The mount utilizes 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) .9 INCHES Split Reducing Bushings(2) .75 INCHES Split Reducing Bushings(1) 5/32 INCHES Hex Key Wrench(1) 127mm x 17mm Rubber Adhesive Stripclamp range .75 INCHES - 1 INCHES diameterball size C Size (1.5 INCHES )weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbsmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.33 lb hardware included (2) #10-24 x 1 INCHES Socket Head Cap Screws(2) #10-24 Nylock Nuts(2) .9 INCHES Split Reducing Bushings(2) .75 INCHES Split Reducing Bushings(1) 5/32 INCHES Hex Key Wrench(1) 127mm x 17mm Rubber Adhesive Strip clamp range .75 INCHES - 1 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 0.33 lb