GBB434 Gym Ball Base Specification .Size: ID 33cm / OD 50cm .Material: PP / for 55cm & 65cm Gym Ball .1 PC / Color Box: 36cm x 16.5cm x 8.5cm 12 PCS / CTN: 54.5cm x 35cm x 38cm / 2.6' N.W.: 8kgs ; G.W.: 9kgs Inquire Now View More Details