Made from high performance polyurethane elastomers reinforced with multiple plies of polyester fabric fenner drives" composite v-belts offer problem solving alternatives to conventional endless rubber v-belts of classical and metric sp wedge cross sections. v-belts are of unique designs & incorporate custom composite materials which provide a number of time & cost saving benefits to maintenance engineers & equipment designers: • longer belt life • easier & faster installation • reduced v-belt inventory • -Inchzero downtime-Inch maintenance • simplified drive design • reduced drive vibration. Type A. Size: 1/2 Inch by 4 Feet.