SPRING COMPRESSOR TOOL for  Installing Push Rod Tube Springs on Continental Engines  – 470 / 520 / 550 engines   Fits Models:    Continental E-185,   E-225,     IO-346 IO-470  Series O-470,  Series IO-520, TSIO-520 Series,  IO-550  Series                     Part #: VSC-2 A spring compressor tool for installing push rod tube springs. (See video) 1 each Made in the USA.