Jar accelerator is one of jar, and also a new-style jar fishing tool, it mains use together with super fishing jar, Jar accelerator of each specification is designed with relevant super accelerator, thus Jar accelerator is matching equipment for super accelerator. It is function mainly is to supply acceleration to the upper end of the jar during the free jarring stroke.

Type	O.D.(mm/inch)	I.D.	Connection	Length	Max. Force
		(mm/inch)	API	(mm/inch)	KN
ZJ178	178(7)	57(2-1/4)	NC50	4000(157-1/2)	1800
When ordering or requesting quotation,if the size out of above spec, pls. specify clearly.