Replacement Aftermarket belt for S78 FELDMANN 35-SR Belt, W/B. & S. 3 1/2 H.P. Eng., W/26" Belt O.C. Top Width: 1/2 in Weight: 0.16 Height: 5/16 in Length: 24 in inside, 26 in Outside Material: Dry wrapped aramid cord Recommended use: Higher horse power uses and are designed to increase strength and stability and are also designed to have a smoother grip. The material helps resist humidity, high temperatures, oil and cracking