... 8-8.5" 4)OEM: Available 5)Standard: ISO9002 Rubber Tether Ball 1)Description: ·Nylon wound·Official size & weight·Highly ... durable rubber cover with rubber or butyl bladder.·Rubber covered tether ball is perfect for the playground or sports field. ... are manufactory, we are the source.·We have various rubber tether balls. SOCCER BALLS, FOOTBALLS, BASKETBALLS, VOLLEYBALLS, PLAYGROUND BALLS, HANDBALLS, ...