MTD Half Pulley No. 956-04160. This is an original equipment half pulley. Size Key 25mm x 2.62 OD. Replaces part numbers 95604160, 956 04160, 756-04160, 756 04160 and 75604160
Husqvarna Idler Pulleys No. 587973001. This is an original equipment Husqvarna Idler Pulley that has a 1/4" center hole. Replaces part numbers 581904001 and 581 90 40-01