Amazon.com : Starting Stringing Clamp Tool for Tennis and Badminton Racket Tennis : Sports & Outdoors
A key tool for every stringer. The Pro's Pro Starter Clamp is made of heavy duty steel and uses 3 springs to help better maintain tension. Rubberized handles provide grip and comfort.
Pro Stringer Claw Clamps 1.0 – Pro Stringer – Portable Tennis Stringing Machine