Molded thermoplastic metric timing belt pulley: 15 mm diameter, 24 tooth, 2 mm pitch and 17 mm 10.5 mm diameter, 17 tooth, 2 mm pitch. Special bore- 8 mm plain bore (w/ pin drive slot in face) through 24 teeth segment, 6.5 mm bore through 17 tooth segment. Larger segment is flanged. Unused.
