This zip line pulley is made of high-quality aluminum and magnesium alloy shell, along with a stainless steel pulley. Its double sheaves provide smooth rotation and great performance.

The pulley features two stainless steel discs with sealed bearings that prevent twisting, making it fast, efficient, and safe. It's even better than a single pulley.

The pulley has a strong breaking strength of 30KN (6700LBS), making it perfect for outdoor activities like rescues, swing seats, or backyard zip lines.

It's designed for ropes and cables with a maximum rope diameter of 13mm (0.5in) and cable diameter of 12mm (0.36in). The pulley is lightweight and durable, making it great for outdoor adventures.

You can use this pulley for a variety of activities, such as backyard zip lines, swing seats, dog runs, lifts, rescues, bungee jumping, or aerial work. The holes make it easy to clip carabiners, and it's compatible with both textile rope and cable.