Thermoid PowerPlus v-belts, offered in 3H, 4H and 5H cross-sections, with kevlar cord, transmit a minimum of 15% more horsepower than standard v-belts.
PowerPlus replacement belts are specifically designed and produced to withstand the rigors of tough, frequent usage in lawn and garden equipment, home workshop equipment, hobby center power tools, as well as in severe industrial drives. PowerPlus belts, offered in 3H, 4H and 5H cross-sections, with kevlar cord, transmit a minimum of 15% more horse power than standard belts. They withstand severe shock load and provide generally longer life than standard duty belts. They are oil and heat resistant. To cross a Prime Mover belt over to a PowerPlus belt, change the "A" to "4H" or "B" to "5H." For an A, add two then put a zero at the end. For a B, add three then put a zero at the end. For example, A60 becomes 4H620 and B60 becomes 5H630.