Cogged V-Belt, Belt Material Polybutadiene, Edge Construction Raw Edge, Industry Number AX40, Number of Bands 1, Outside Length 42 in, Reinforcing Cord Material Polyester, Thickness 5/16 in, Top Width 1/2 in, Belt Trade Size AX, V-Belt Type Classical, Cogged, Maximum Operating Temperature 230 Degrees F, Minimum Operating Temperature -40 Degrees F, Resistance Properties Heat , Oil