... to EN71 standard) -Size:60g/pc,3.5cm in dia. Hand grip balls,usually,we have 3 different hardnesses of 30 ... ×3, 5cm in dia. -Price:FOB shanghai,US$2.12/set,based on MOQ 2000sets. -Packing:1set/double blister w/backing ... /6kgs Good for either sportsman or office people, to train hand flexibility hand grip ball