Iron Mind - CoC 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. Steps of 2, 4, 6, 8, 10, 12, 14 and 16 mm, along with 19 and 54 mm measures,aircraft-grade aluminum. Overall length 2-1/8"

• Takes the guesswork out of your grip training

• Hit pay dirt even when you can't fully close your grippers

• Progressively close the gap until you can touch the handles

• Specifically designed for Captains of Crush Grippers

• Precision quality, made in the USA