Wheel Size : diameter : 30/40/50MM Material : Nylon Color : Black, grey,white Load rating : 15-30kgs With / without brake Loading capacity: 40kgWheel diameter: 30/40/ 50mmPlate width: 38*38mm ; 40*40mmBrake: Nylon brake,without brakeFinish: Zinc-platedType: swivel Features:1.caster: swivel caster2.Nylon: anti-abrasion, rolling resistance,etc.3.finish: zinc-plated to resist bruise and corrosion4. ...