Model : JONNESWAY VALVE SPRING COMPRESSOR A-TYPE AI020018

Features : 

Compress valve springs on overhead valve and L-head engines on cars , trucks 
and tractors .
Tool has a 9-3/4" throat depth , and jaw openings 23/4 to 7-3/4" fit larger
engine sizes .
Jaws and plunger bar are easily adjusted.
Plunger bar seats on both flat - and cup - shaped valve heads .
Offset and straight jaws are included .
Use these heat treated jaws 380 and 383 valve spring compressors .