wrist circumductor: cast iron wheel of 30cm diameter with drum stand is mounted on a laminated wooden base size: 65cm x 22cm. has a small adjustable handle fitted to the wheel. knob is provided on the drum to control resistance from zero to maximum. a hollowed foam padded platform size: 22cm x 13cm x 15cm high is fitted with two straps to hold arm & is fitted over the base in front of the wheel for circumduction. metal parts oven baked finish.