The smarttune 5/16” (the second smallest in the standing rigging range) is designed for sports and day boats. In minutes it easily swaps in for the existing turnscrew in a forestay/backstay or shrouds/diagonals. 

• Thread size 5/16″
• Calibrated load 1000kg
• Breaking load 2450kg
• Sensor dimensions 55 x 112 x 18mm
• Sensor weight 180g
• Wireless charging