Series 55 Ratchet Block - Auto / Manual

Ronstan RF56100

The Ronstan Series 55 Ratchet Block features a unique auto or manual ratchet setting. In the auto mode, the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong.

Features

• Up to 20:1 holding power
• Smooth easing of sheets
• Swivel shackle head for unlimited block rotation
• Automatic & manual ratchet block

Specifications

• Sheave Diameter: 2 5/32"
• Max Rope Diameter: 3/8"
• Shackle Pin Diameter: 3/16"
• Max Working Load: 550 lbs
• Breaking Load: 1430 lbs
• Weight: 2.9 oz