The Spicer ReadyPack SPL Lite Kit from Dana Incorporated features a service-free SPL Lite coupling shaft with additional SPL series options. Designed to save time and streamlined ordering these 100% genuine SPicer component kits come with u-joints that are already installed in the yoke shaft for teh slip joint an din teh tube yoke for the tight joint. Spicer Life Series (SPL) u-joints come pre-greased with production lube and sealed with a multi-lip seal for greater convenience.