The Barton TUPHblox Size 4 single block with a swivel head is a durable marine pulley block crafted from classic Tufnol laminate. The rotating swivel head allows the block to self-align with the direction of pull, effectively preventing rope twisting and ensuring smooth line control under heavy loads.
Key Features:
Type: Single block with swivel head
Sheave Diameter: 58 mm
Max Line Diameter: 14 mm
Material: Premium Tufnol (TUPHblox) with stainless steel side straps for UV and weather resistance
Application: Ideal for mainsheets, halyards, and control line setups on sailboats and traditional vessels
