Company23 Valve Spring Compressor ToolFeatures: Utilizes our proven EJ design with a new single piece FA FB head plate Access all valves per head with one plate install Compresses valve springs with the head on the bench or on the engine in the car Allows easy replacement of valve stem seals, valves, springs, and retainers Officially approved valve spring compressor for standard and beehive GSC Power Division valve springs Will not slip or damage head like universal clamp compressors