Check the listing for details. RAP-354U-TRA1 RAM Track Ball with T-Bolt Attachment - C Siz.... Color: Black, Condition: New. Listed at 29.44 USD. RAM Track Ball with T-Bolt Attachment - C Siz... RAP-354U-TRA1 Genuine RAM Products! The RAM Track Ball is made up of a C size 1.5 INCHES rubber ball molded to a high strength composite base, a rubber friction washer and a stainless steel T-bolt for sliding into virtually any track system. Simply insert or slide the Track Ball into your track and twist the ball clockwise to tighten in place. Twist counterclockwise to loosen or adjust the ball.hardware included (1) Friction Washer(1) 1/4 INCHES -20 x 7/8 INCHES T-Boltplate size 0.48 INCHES x 0.95 INCHES T-Boltball size C Size (1.5 INCHES )weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbsmaterials High strength compositepackaging type Poly BagWeight 0.15 lb FEATURES Designed for track mounting systems including the RAM Tough-Track; includes 1.5 INCHES C size rubber ball Features a rubber friction washer and a stainless steel T-bolt; simply insert into your track and twist the ball clockwise to tighten Made of high-strength composites for durability and reliability in the most demanding environments Backed by a lifetime warranty hardware included (1) Friction Washer(1) 1/4 INCHES -20 x 7/8 INCHES T-Bolt plate size 0.48 INCHES x 0.95 INCHES T-Bolt ball size C Size (1.5 INCHES ) weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbs materials High strength composite packaging type Poly Bag Weight 0.15 lb