The Barton TUPHblox Size 3 double block with a fixed bow (eye) and integrated becket is a heavy-duty marine pulley block crafted from classic Tufnol laminate. Designed for high-load applications requiring a rigid, non-swiveling attachment point, its dual 45mm sheaves and lower becket enable high-ratio 4:1 or 5:1 purchase tackle systems.
Key Features:
Type: Double block with fixed bow and becket
Sheave Diameter: 45 mm
Max Line Diameter: 13 mm
Material: Premium Tufnol (TUPHblox) with stainless steel side straps for UV and weather resistance
Application: Ideal for fixed-alignment mainsheet systems, boom vangs, halyard control, and purchase setups on sailboats and traditional vessels
