Allen 15mm Thimble Low Firction Ring Silver A..87-15-SILVER15mm High Load Thimble Aluminium high load thimbles are also known as low friction rings, lowering rings, lead rings, hard eyes and thimbles. High load thimbles are a great alternative to blocks when there is a need for high static load capabilities. Crafted from premium marine grade aluminium with an anodised finish to give excellent resistance to corrosion, it is suitable for use in harsh marine environments. Our high load thimbles also come coated