236-5487, OPTIBELT, OPTIBELT Timing Belt Pulley, Aluminium 15mm Belt Width x 3mm Pitch, 21 Tooth, Brand OPTIBELT, Number Of Teeth 21, Pitch 3mm, To Suit Belt Width 15mm OPTIBELT Timing Belt Pulley, Aluminium 15mm Belt Width x 3mm Pitch, 21 Tooth