Black nylon plastic with a matte finish and slight grainy feel.
About this Product
This is a pair of sprockets for making a polargraph drawing machine. These are gears designed to drive 12mm pitch beaded cord - like from a roller blind. Have a look at www.polargraph.co.uk for more information. The two sprockets are held together with three connecting sprues - just clip these with a wire cutter to separate them.