If you've got a VEGA treadmill that needs a new drive belt, this SING F LTD replacement is exactly what you're looking for. The model number is 336EPJ, and it's got 5 ribs that provide solid grip and power transmission. The unstretched length is 326mm, but when it's properly installed on your machine, it stretches to 336mm - that's how it's designed to work. The width is 11.7mm, so make sure that matches your treadmill's requirements. It's made from durable rubber that's built to handle the constant movement and friction of treadmill operation without wearing out quickly. What's really nice is that it provides smooth power transfer from the motor to the belt, which means less slipping and more consistent performance during your workouts. Installation is pretty straightforward if you're comfortable with basic treadmill maintenance - just make sure you follow your treadmill's manual for proper belt tensioning. This is one of those replacement parts that can seriously extend the life of your treadmill without costing a fortune. Definitely beats buying a whole new machine!