Many of you may be familiar with some of the DIY dolly tutorials and plans, if not give it a search. Rig Wheels are very versatile, allowing them to run smoothly on flat surfaces as well as PVC pipe, cable channel and strut channel. The small wheels are rubberized for a smooth ride and are about the size of a quarter, so they are light weight and easily fit into a backpack or small case. Pricing will run you $115.00 for a set of four, that’s รย per carriage, 16 wheels total!
References:
Rig Wheels
http://www.ebay.com/itm/Bathroom-Shower-Hanging-Wheel-Sliding-Door-Roller-Pulley-w-Door-Clamp-Screws-/200978327870?pt=LH_DefaultDomain_0&hash=item2ecb3de93e