Super Strong Hand Grip

．Spring:
    1A. 6mm (Red)
    1B. 6.5mm (Blue)
    1C. 7mm (Black)
．1 PR / Double Blister: 15cm x 23cm x 5.5cm
    24 PRS / CTN: 47cm x 39.4cm x 32cm / 2.1'
    N.W.: 10kgs ; G.W.: 11kgs