Harken 25mm High Strength Wire 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: 35g
- Maximum wire diameter: 2mm
- Maximum line diameter: 4mm
- Maximum working load: 454kg
- Breaking load: 907kg