9" High Speed Low Friction Spoke Pulley Pulley is mounted on a free running ball bearings with minimum frication. Mounted on a removable rod with threads of 5.5" length x 3/8" diameter Wheel has a diameter of 2.5", thickness of 1/8", and has spokes Idea for use with photogate sensors 9" total length

Pulley is mounted on a free running ball bearings with minimum frication. Mounted on a removable rod with threads of 5.5" length x 3/8" diameterWheel has a diameter of 2.5", thickness of 1/8", and has spokes. Wheel has a diameter of 2.5", thickness of 1/8", and has spokes. Ideal for use with photogates.