Please confirm multiple times before purchasing whether the product size, color, and style are what you need 1.5inch C Size Double U-Bolt Rail 1.5inch Ball Mount with 1.5inch Round ball base- Medium 14.5cm Double Socket Arm Attaches to any 1.5inch size ball component, including mounting bases and device holders; double ball and socket technology allows for near-infinite adjustability of your 1.5 inch mounting system Made of marine-grade aluminum for durability and reliability in the most demanding environments Double Socket Arm For Electronic Equipment, Motorcycle/Car/Engineering Machine/Tractor/agricultural machinery/forklift Ball size: 38.1mm / 1.5 inch, other size as blow photos. All is standard size and welcome buy from our store. Fit: Used on motorcycle, bicycle handlebar etc., and the items with 1.5 inch/38.1mm mount. U bolt fit handlebar: Big one: fit 13-33mm Used on motorcycle, bicycle handlebar, and totally compatible for Color: Black Material: Plastic+Metal Package Contents: 1 * Mount Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.