United RT18/RT26/RT37S/RT51S Replacement Rotary Blade, 4-1/2in

Cut with precision and confidence thanks to the United RT18/RT26/RT37S/RT51S Replacement Rotary Blade. Hardened steel offers a reliable slice each time. Compatible with United RT18, RT26, RT37S and RT51S paper trimmers (sold separately). Made of hardened steel for durability and precision. Includes a replacement cutting head with blade.