The Doorway Dolly from Proaim is the Strongest Platform Dolly. It's the next generation doorway dolly based on the industry proven design and engineering. The Quad Dolly offers you new possibilities concerning mobility and versatility for on stage and most production situations. The Dolly is constructed from Highest Grade Materials for Ultimate Strength and will Deliver Years of Reliable Support. It features pneumatic wheels, non-slip wooden platform, two removable side boards, switchable comfortable operator seat and push/pull steering bars. Payload capacity is over 500kg/1100lb. On this dolly; add crane, bazooka, tripod, slider, or whatever you can think of! Load it with gear to get to the location with ease! What 's In The Box - Proaim Doorway Dolly - Chair - Z for chair - Steering Push bar SPECIFICATIONS OF DOLLY - Load Capacity: 500kg/1100lb - Construction: . Chassis: Solid Metal . Platform: Wooden Steering Push bar allows rolling on ground with standard pneumatic rubber tyres while on the track with Skateboard Kit (purchased separately). Robust Support The wooden platform is attached to the steel tubing frame. It allows you to feel secure in its abilities in any circumstance. The well-designed and exceptionally constructed dolly is vigorously stable and can support camera setups/camera operators/carriage weight up to 500kg/1100lb. Comfortable Operator Seat