Note 1 :
Please confirm whether the model matches your product before purchase.

Note 2 :
LS3/LS7/LSA cylinder head with offset rocker will need a second compressor with offset opening.

Use steps:
1.Simply screw the tool in place of the rocker arm.
2. insert the square drive of a standard switch bar or socket wrench into the left or right side of the tool.
3. pry down to compress the spring.

Package Include:
1* Valve Spring Compressor
1*2 inches screw
1*1.65 inches screw

Package parameters:
The products are packed in cartons of 5.91''*3.94''*1.97''.(No installation instructions)