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Rubber bands of various strengths
Prepare yourself with a quality setting block so nothing is left to chance
Turn the knob in half turns
That skew is corrected with this left-hand spring
The Flask 178 Rubber bands of various strengthsLooking to build massive pinch strength? Take a sip from The Flask. This lightweight and innovative piece of equipment from Barrel Strength Systems has quickly become the premier pinch device. The Flask is a compact, 2. 25" fixed width pinch device designed to mimic the profile and thickness of two 45lb plates pinched together, just like the classic grip feat. At less than 2lbs, The Flask can be set up on a loading pin with total loads less than 10lbs