50mm Mame Swivel Block Nylon – Marine-Grade Lightweight Pulley

The 50mm Mame Swivel Block Nylon from Absolute Marine is a compact, marine-grade pulley designed for sailboats, dinghies, and small cruisers that demand smooth line travel. It pairs a nylon single sheave with a robust SS316 housing for dependable performance in saltwater environments while keeping weight down for agile deck handling.

• Size & Sheave: 50mm nylon single sheave delivers quiet, low-friction rope motion and reduces wear on lines during reefing, halyards, or control-line runs.
• Materials: SS316 marine-grade stainless steel housing provides excellent corrosion resistance against spray, bilge humidity, and prolonged exposure to seawater.
• Swivel Design: Swivel head automatically aligns with changing load directions, minimizes rope twist, and simplifies rigging in tight or awkward moments on deck.
• Weight & Application: Lightweight block ideal for auxiliary or lightweight pulleys where heavy-duty blocks aren’t needed, suited for sailboats, dinghies, and small cruisers.
• Deck Fit: Compact 50mm footprint fits crowded deck setups and makes it a practical upgrade for existing rigging or new projects.
• Ideal Uses: Guides halyards, routes control lines, or assists jam-cleat lines without sacrificing speed or ease of operation.
• Product Code: k291
• Brand: Absolute Marine

The nylon sheave provides smooth rope contact and quiet operation, while the stainless steel body resists saltwater spray and humidity for long-lasting performance. The swivel head minimizes line binding during tacks and maneuvers, allowing you to focus on sailing rather than constant readjustment. Its compact size and corrosion-resistant design make it a dependable upgrade for deck hardware and light-duty rigging, delivering reliable rotation, easy line travel, and reduced maintenance on everyday sailing tasks.