Original OEM Troy Bilt - MTD 687-02538 - ADAPTER ASM 25MM I
Amazon.com: 748-0376E Lawn Mower Blade Adapter for MTD 748-0376A 748-0376B 748-0376C 748-0376, Suitable for MTD Craftsman Troy-Bilt Ryobi Bolens Yard Man Cub Cadet Yard Machines Push Walk Behind Mower : Patio, Lawn
Mtd Adapter-Blade 21 948-04015A | Zoro
Blade Adapter with Star for MTD 748-04082 746-0910 746-0910A | eBay
Oregon Replacement Blade Adapter Kit, Fits Various MTD Models (R-65-225) R-65-225-CP - The Home Depot
MTD Lawn Mower Blade Adapter for Cub Cadet, Troy-Bilt and Yard Machines Models at Tractor Supply Co.
Mtd 687-02528 Lawn Mower Blade Adapter with Pulley Genuine Original Equipment Manufacturer (OEM) Part - China Drive Pulley and Pulley price | Made-in-China.com