Armrest Construction: Injected nylon/glass fiber. Armrest mounts. Comfy armrests, compatible with a number of Profile Designs' aerobars. Hardware: M6 x 10 FHB. Color: Matte Black. Pad Model: 10mm. We are also proud to introduce our own range of quality accessories and tools that we have researched, sourced and tested from top quality manufacturers in Taiwan.