Split drive sprocket, machined from solid,
with guide rings in polyamide, 23 teeth,
bore SW41 H8, for hexagonal shaft 41 mm h11,
width: 47.5 mm, hub width: 41.5 mm,
for chains series 815, 812, 881M,
screws and parallel dowel pins in
stainless steel, inserts in nickel plated brass