The Allen 20mm Dynamic Single Hook Block is a compact, lightweight sailing block designed for smooth and efficient rope control on dinghies and small boats. Featuring Allen’s dynamic ball bearing system, this 20mm block delivers low friction performance, allowing control lines and sheets to run freely under load. The integrated hook attachment makes it quick and easy to clip onto rigging points, making it ideal for temporary setups, adjustable control systems and lightweight dinghy rigging. Its compact size and minimal weight help reduce overall rigging weight while maintaining dependable strength. Designed to work with smaller diameter lines, this Allen dynamic hook block is suitable for a wide range of sailing applications where reliable performance and quick attachment are required. Key features:• 20mm dynamic single sailing block with hook• Allen ball bearing system for smooth, low friction operation• Quick attachment hook for fast rigging setup• Compact and lightweight design• Ideal for dinghy control lines and lightweight rigging• Durable construction for marine environments Specifications:Length: 60mmLine diameter: 2.5 – 6mmBreaking load: 165kgWeight: 17.5gAllen part number: AL-2021-HK
