hand pallet truck 1.material of wheel:PUR,PA 2.load roller:single roller is dia.80x86,double roller is dia.80x63 3.GS tested 1.hand pallet truck (hydraulic hand pallet truck) is optional by customer2.load roller is divided into single and double roller,single roller is dia.80x86,double roller is dia.80x633.material of wheel:PUR,PA4.has been GS tested and approved by TUV hand pallet truck