Ronstan Series 40 Ball Bearing Orbit Block 40mm Lightweight for Dinghy Racing

The Ronstan Series 40 Ball Bearing Orbit Block offers exceptional strength-to-weight performance for dinghy racing and small yachts. Made from composite reinforced polymer and featuring a Dyneema rope link head, this block is engineered for durability and lightweight efficiency.

Its precision ball bearing placement and fiber-reinforced components reduce unnecessary mass, making it ideal for mainsheet, spinnaker, halyard, and control line applications.

• Simple, secure attachment
• Low profile, compact design
• Fiddle block flexibility
• High performance cleating
• Single inner cheeks on doubles and triples for reduced weight
• For mainsheet and spinnaker systems on dinghies up to 16 ft
• Suitable for halyard, vang, and backstay on boats up to 26 ft
• Control line use on larger yachts
• Sheave diameter: 1-9/16" (40mm)
• Maximum rope diameter: 5/16" (9mm)