Captains of Crush Key: Miles to Mils

GPS for your grip training

Know where you are and you'll reach your goal faster. Here's how you gauge the gap and track your progress--precisely.

Specifications:

• Aircraft-grade aluminum
• Steps of 2, 4, 6, 8, 10, 12, 14 and 16MM, along with 19 and 54MM measures
• Overall length 2-1/8"

Captains of Crush gripper not included.