These parrel bead stopper balls are UV stable and impact resistant. They measure 20mm across, have a center hole diameter of 5mm, and the maximum rope size is 3/16 inches.

The New Ronstan Low Friction Ring Pulley provides outstanding strength to weight solution where the absolute minimum friction of a ball bearing block is not required. The Ronstan Low Friction Rings are machined from high grade aluminum with a durable low friction anodized coating. Suits line diameter up to 4.5mm.

Dimensions:
5mm Inner Diameter
15mm Outer Diameter

The new, versatile Ronstan Shock Block Sheaveless Pulley is only 7/8" long, yet it is very strong, super lightweight, and designed for performance.

The new, versatile Ronstan Shock Block Sheaveless Pulley is only 7/8" long, yet it is very strong, super lightweight, and designed for performance.

The Ronstan Bridle pulley is lightweight and durable.

Ronstan Double Pulleys are used on some of the kites made by top-brand companies like Cabrinha and Slingshot.