Constant pull drop weight rotary ball baring clutch maintenance free tensioner.  Diamond-coated string gripper.

  Unidirectional clutch for convenient single hand operation. 

Tension range: 9-102 lbs (or 4-46 kgs). Both pounds or kilograms tension scale reading available.

6-point quick mounting system with 4 independent heavy duty CrMo alloy articulated adjustable mounting arms suitable for any different size of racket frame.2 padded anti-slip head and throat mounting posts to protect your valuable racquets.

 2 diamond-coated spring assisted aluminum alloy thumb-adjustable swivel tennis clamps.

Load spreaders at tip and throat mounting design for user ultra convenient, fast and secure mounting racquets and stringing.