This jig will allow for accurate holes to be drilled in the 2020 and newer 900 turbo secondary helix.

The 2020 models come with a compression spring and no holes to accept the torsion spring that so many prefer to use.

The jig has a notch that sits on the arrow on the helix and makes it impossible to drill holes in the wrong position.

The Jig can also be purchased with our Dalton torsion spring.

Choose spring options in drop down menu or order springs separately.