1,water filled roller manufacture 2,rich exporting experience 3,30 & 32 cm diameter avaliable 4,discount over 300 pcs water filled roller:modelsizepacking sizeG.W. TC50131100/420/300630/310/31011 Qingdao Xinyuyuan Industrial Products Co., LTd. is mainly produce many kinds of wheel barrows ,hand trolleys, platform hand trucks, garden carts ,sand beach cart, cement mixer, snow shovel, rubber wheel ...