Replacement belt strap width for analog player (belt drive system) : 0.2 inch (5 mm) strap circumference length = 2 = Compatible model number (please squish the belt and measure) Example: 62 cm / 2 = 31 cm to B-31 is compatible. If you do not know the length of the belt, please measure the diameter of the strap on the back of the turntable, as it is rubber product, it will stretch. Measurements are approximate.