Easily and quickly install bearing cups and Dana/Spicer SPL quick disconnect universal joints. Includes three press bearing adapters designed to fit manufacturer's recommended depths. Designed to be used with manual and impact driven tools. Reduce the risk of damaging driveshafts, yokes, and joints during service. Made of high-quality heavy-duty steel capable of withstanding rigorous and daily use in shop environments. Commonly found on class 6-8 transportation trucks and equipment. (Kenworth, Peterbilt, Freightliner, Mack, Volvo, etc. .