Name:adjustable Scaffold Caster Wheels,adjustable scaffolding caster wheels Material: PU,Polyamide Size available: 6" x 50mm ; 8" x 50mm Loading Capacity:250kg-350kg Solid Stem Size: 34.5mm x 70mm Long Size of mounting tube: Customize Widely used as scaffold rack casters wheels,Rack Caster wheel,Scaffolding tower casters,We can make the stem size according to client's size www.casterwheelsco.com ; [email protected]