304 Stainless Steel Pulley Wheel: The U-groove wheel is constructed from 304 stainless steel, offering high strength, excellent durability, and enhanced resistance to deformation and corrosion. 360-Degree Rotation Swivel Top Ring for smooth rope handling. The smooth roller ensures efficient rope traversal. Pulleys are removable for easy installation. Compared to standard pulleys, the U-groove wheel is thicker, providing increased strength and higher load capacity. Dual Ball Bearing Design: Equipped with two carbon steel ball bearings to reduce friction, allowing for smoother and quieter rotation. The reinforced steel plate bracket and wheel core improve overall load-bearing performance. Specifications: U-Type Pulley Block. Groove Width: 22mm, Swivel Ring Diameter: 48mm, Overall Height: 107mm, Thickness: 3mm, Maximum Load Capacity: 500kg (1100 lbs). Wide Application: This U-groove pulley is a simple and practical roller designed to assist in lifting operations using ropes or cords. Suitable for indoor and outdoor use, it helps manage heavy loads and provides mechanical advantage in various utility, marine, and rigging applications.