530272

Learn all about gears with this unique bumper pack Contains: 10 x each of 10 20 30 40 and 50 tooth 2mm gears plus 2mm bevel gears and interlocking racks 10 x each of 10 20 30 40 and 50 tooth 4mm gears 4mm bevel gears and interlocking racks 5 x 2mm steel axles and 5 x 4mm steel axles.