Science museum SM1043 STRENGTH BALL
Product code: 053063
Pull the rip cord provided to start the internal gyro spinning. Then grip Strength Ball and start twisting your wrists, while controlling the gyroscopic forces. The built-in Revometer reveals your highest revs rating. Great to challenge friends and family. The perfect trainer for golfers and racket sports enthusiasts, but most commonly purchased by gadget lovers!
Was: £14.99 then £7.49
NOW ONLY £4.99 INSTORE