... 3,handle is powder coating 4,caster wheel is very smooth and quiet 1,hand trolley,150/300kgs2,the platform is plastic ... ,3,handle is powder coating,4,caster wheel is very smooth and quiet5,caster size is 100mm/125mm6,size of platform ... ,JAPANESE,.......If you're interested in our products please feel free to contact me.Thanks and best regards HAND TROLLEY ...