A molded thermoplastic metric 3 element combination component; a spur gear 38 mm diameter with 36 teeth and 4 mm face width, a spur gear 20 mm in diameter with 22 teeth and 4mm face width, and a 30 mm pitch diameter pulley with a half-round groove for a round drive belt. Plain, 8.15 mm diameter bore. Through-bore thickness is 14.5 mm. New, old stock
