RiaYer 50mm Heavy-Duty Single Swivel Sailing Block with Ball Bearings, T316 Stainless Steel & PA66 Nylon Marine Pulley, 3100 lbs Breaking Load, High-Load Rigging Hardware (1-Pack)

Brand: RiaYer

Color: Black

Features:

• 【Industrial-Strength Ball Bearing Action】 Designed for high-load applications, the RiaYer 50mm block integrates heavy-duty ball bearings that ensure effortless sheave rotation. This technology drastically reduces friction, allowing for rapid and precise line handling during racing or heavy industrial hoisting.
• 【Dynamic 800 lbs Working Load Limit】 Engineered for maximum reliability, this 50mm block supports a Safe Working Load (WLL) of 800 lbs (360 kg) and a heavy-duty Breaking Load of 3100 lbs (1406 kg). It is a high-performance solution for larger sailboats, halyards, and jib sheets where safety and high-tension performance are non-negotiable.
• 【Premium PA66 & T316 Stainless Steel】 Utilizing PA66 (Reinforced Nylon) for the sheave provides outstanding mechanical strength and heat resistance. Combined with a T316 Stainless Steel shackle and frame, this block provides long-term service in saltwater environments without rust or structural fatigue.
• 【Multi-Functional Swivel & Lock System】 The shackle head offers a 3-way configuration: freely rotating 360° to eliminate line twist, or locked at 0°/90° for stable, fixed-angle operation. This versatility is essential for complex deck layouts and heavy-duty utility tasks.
• 【Optimized for Large Lines & Efficiency】 With a 2' (50mm) sheave diameter and a 1/2' (12mm) groove width, it accommodates thicker lines with ease. The larger radius reduces line friction and bending stress, significantly extending the life of your ropes and rigging.

Package Dimensions: 4.9 x 2.8 x 1.1 inches