Ronstan RF48300 Series 40 Triple Block with Swivel Shackle

Ronstan Series 40 Triple Block with Swivel Shackle

The Ronstan Series 40 Triple Block with Swivel Shackle is engineered for optimal strength and performance in marine applications. Its lightweight construction features toughened glass fiber reinforced nylon cheeks that replace traditional stainless steel straps, offering reliability and efficiency in a compact design. The ball-bearing system minimizes friction, ensuring smooth operation and easy adjustments.

This versatile block allows for a variety of setups, including traditional single swivel configurations and multiple sheave designs that can enhance your sailing experience. It effectively accommodates high dynamic and static loads, making it suitable for a range of applications from dinghies to larger yachts.

Key Features:

• Exceptional dynamic and static load ratings for enhanced performance
• Durable, lightweight design with reinforced nylon for reliability
• Efficient ball-bearing configuration for low friction and easy trimming
• Multiple attachment options including soft lashing and swivel shackle
• Compact and low-profile design for easy installation
• High-performance cleating mechanism for secure rope holding

Applications:

• Ideal for mainsheet and spinnaker systems on dinghies and catamarans
• Suitable for halyard, vang, and backstay applications on various boats
• Designed for control line setups on larger sailing yachts

Specifications:

• Sheave Diameter: 1-9/16 in.
• Maximum Rope Diameter: 3/8 in.
• Pin Diameter: 5/32 in.
• Maximum Working Load: 1320 lb.
• Breaking Load: 2650 lb.
• Weight: 5.9 oz.