Key-Bak Assure-A-Key Untress One Oper和手写笔带Mid6带夹可伸缩钥匙扣（0kbp-0234）
Twin finger comfort design ensures a stronger grip with less effort than single finger models.
Engineered with straight hooks to reduce slippage from door handles, push bars and pull handles
Anti-Scratching Stylus tip for signing credit card signature pads, using ATMs, smartphones and other devices with touch screens
Thumb rest for increased leverage for superior control and comfort.
Engineered to be small but mighty. The Assure-A-Key is 35% Lighter than most other models but has been proven to withstand more than 200lbs.