The NEW PRO PIN bonnet replaces the older style "ball bonnet" This new style address an issue with the old style not working with all ASA ON/OFF Pins.
Two version available Standard top for regulator Ninja regs and the PRO V2 Version
Get $10 off standard reg service when purchased together.
Note if your "Ball" style is working fine with your setup you DO NOT need this option.
Made in the USA