Blades are made of heavy-duty steel to exacting specifications. Each blade is designed for longer life and greater performance. Fits: Stone T-36 (34583) - Allen 336 (AEC-8140), Allen 436 (AEC-8140) - Bartell B336 (TA414) - Marshalltown 36-4-1 & 2 ( - SET OF 4 BLADES