The B47.5 Blade Wheel Belt (Part #: X100-900) is compatible with Wood-Mizer LX25 and LX55 portable sawmills. The approximate life expectancy for this belt is 400 hours. To increase life expectancy, make sure to always keep it clean. To see if your blade wheel belt needs to be replaced, check for cracks or an extremely loose fit. In addition to following the maintenance schedule in your manual, the B47.5 Blade Wheel Belt will help keep your equipment in great condition so you can continue to enjoy your Wood-Mizer for years to come!