The Husqvarna 581805901 Lawn Tractor Blade Drive Belt transfers engine power to the mower deck for compatible Husqvarna lawn tractors. The belt drives the blade system, helping maintain proper blade rotation and consistent cutting operation during mowing. This blade drive belt is a practical replacement for a worn, stretched, cracked, or damaged belt that may cause slipping or reduced... https://www.wholetoolbox.com/husqvarna-581805901-lawn-tractor-blade-drive-belt/581805901.html