For use on a wide range of OHV OHC and CHV engines. Not suitable for use on engines with deep seated valves. Allow valve springs and valve stem oil seals to be replaced with the cylinder head. Feature a reversible jaw adaptor and automatic cam-action locking to a re-determined setting. Made by professionals for professionals. Specifications: Manufactured from high grade satin polished steel. Overall length: 250mm. Jaws are chemically blackened to prevent corrosion. Riveted design. Reversible jaw/adapter.