GEARS ASSORTED SIZES (28pk)

Chunky multi-coloured plastic gears for education purposes. Contains: 7 sizes: 8 tooth, 12 tooth x 13.75mm, 18 tooth x 19.75mm, 30 tooth x 31.75mm, 38 tooth x 39.75mm, 45 tooth x 46.75mm and 58 tooth x 59.75mm diam. All gears are 6 mm thick with a tooth height of 2.75 mm. The 8 and 12 tooth gears have an internal hole of 2.00mm. Other size gears have a centre hole of 4.00mm diameter.