Product model: BT-W21 standard hand grip strength trainer 5-piece set Carton: 58*36.5*24CM 19KG 50PCS/carton Packaging method: non-woven fabric bag + color box Product weight: 380 grams Color box dimensions: 11.5*5.5*17.5 (CM) Product model: BT-W20 5-piece set of counting hand grippers Carton: 58*36.5*31CM 20.5 KG 50PCS/carton Packaging method: non-woven fabric bag + color box Product weight: 400 grams Color box dimensions: 11.5*5.5*17.5 (CM) Material: Standard hand grip strengthener: PP+TPR+iron plating 15*10.5*2.5CM 155 grams 1PCS Counting Grip Strengthener: PP+TPR+Iron Plating 17*10.5*2.5CM 180 grams 1PCS Finger Strengthener: ABS 9*7.5*2(CM) 65 grams 1PCS Finger separator (large size): Silicone 10*5.5*1.5(CM) 13.3 grams 1PCS Grip ball (egg shape): TPE 5.8*4.2CM 44 grams 1 piece Grip ring: TPE, diameter 6.8CM, 47 grams, 1 piece, available in both textured and smooth finishes, 1 piece Non-woven fabric bag 16*20(CM) 1PCS