This provides superior performance on the toughest heavy-duty A, B and C Section industrial drives. Notches molded into the belt during manufacturing make this belt well suited for drives with smaller diameter sheaves Tri-Power™ V-belt is built for superior performance on heavy duty drives of classical cross-section. ... Only ™ molded notch V-belts, including our Tri... Constructed with Gates proprietary construction, this belt has a superior combination of flex and load carrying capacity, as well as less stretch resulting in less maintenance. Belt edge is machined for even sheave groove contact resulting in less slip and wear 37 Outer Length x 5/16Thk AX35 Gates® Cogged V-Belt Tri Belt Gates BX57 (9013-6057) Tri-Power Notched (Cogged) Classical Section Belt Tri-power Classical Section Molded Notch V-belt Pulley Flex-Bonded Cords are strongly bonded to the body of the belt resulting in equal load distribution and the absorption of bending stress without cord deterioration From the outside to the inside, you will have the peace of mind that your equipment is in great shape. Specification:Harmony Cases Compatible With Guitar Effect Pedals HCTPB18 Custom Hard ATA Flight 18 Pedal Board CaseSKU: HCTPB18NOTE - Only Case is included with Purchase Provides superior performance on the toughest heavy-duty A, B and C Section industrial drives