The WIN-CHOKE STYLE TOOLING by MANSON PRECISION is designed for easy installation of choke tubes using a lathe, though hand installation is possible.
It features precision ground tap and reamer from high-speed steel with interchangeable pilot bushings for accurate bore alignment.
The 20 gauge tooling has a thread pitch of 11⁄16"-32 tpi, and it is compatible with multiple shotgun brands including Win-Choke and Browning Invector®.