Harken 300 25mm High Strength Block. Wire blocks are lightweight, low friction blocks designed to carry wire halyards and control lines on boats of all sizes. This block uses low-friction thrust washers and stainless steel sideplates which give superb chafe resistance.
- Sheave diameter: 25mm
- Weight: 28g
- Maximum wire diameter: 2mm
- Maximum line diameter: 4mm
- Shackle pin diameter: 5mm
- Maximum working load: 454kg
- Breaking load: 907kg
