website:https://www.jhmindustry.com/
Shanghai Jian & Mei Industry and Trade Co., Ltd. is the company which manufacture and export fasteners and metal hardware, founded in 2006, with import-export authority. Now, 80% products export to all over the world and 20% sell in domestic market.
I used a plywood deck to prototype this device. MFRshooter heavily influenced this design. I used ansi # 25 chain and sprockets, my skateboard wheels are 2.55 inches tall and I glued stainless steel shaft collars into the wheels on each side. The holes in the wheels are for the Allen key to reach the set screw. I also have a programmed power switch for 1,2,4 or 8 hours.