WHITES MULTIVALVE SMALL TOOLThe Whites Small Multivalve Tool is designed to significantly reduce time when replacing valves in modern 16 20 valve head engines. Compatible with both 4 and 5 valve per cylinder heads that have a 5mm valve stem diameter or smaller. This tool replaces the large clamp type valve spring compressor. Suitable for use in modern 16 20 valve heads Compatible with 4 and 5 valves per cylinder heads Only for use with 5mm valve stems or smaller Significantly