Tourna 850-ES Precision Stringing Machine Black Features: Diablo tensioner and linear pull for the most delicate strings. Glide to Activate string gripper allows tensioning with one hand. Super-fast.. Patented Down-Press Clamps and Gravity release make this the quickest most agile machine on the market. Loaded with features like the Auto-Electric Brake, 4 levels of pre-stretch, 6 pull speeds, 8 memory settings, Electric height adjustment, 6-point and Self Leveling quick mounting. Universal, space saving, ultra efficient, CNC Crafted precision clamps for less pressure on the strings. Unique dial prevents clamp loosening or tightening during the stringing process. The Tourna 850-ES Precision Stringing Machine provides convenient features like rear tilted mounting posts to maximize workspace, Tool Tray, Tool Holder, Cell Phone Holder. Universal V supports and unvirsal clamps make this ideal for both Tennis and Badminton.