Harken 6221 80mm Single Element Block Mastbase with Swivel

The Harken 6221 is an 80mm single element block designed for mastbase applications, featuring an integrated swivel for versatile rigging configurations. Element blocks feature innovative sideplates that combine forged aluminum construction with compound curves, delivering exceptional strength in a contemporary, robust design.

Key Features:

• Forged aluminum sideplates with hardcoat anodization for superior corrosion resistance
• Proven journal bearing system paired with minimal metal sideplates for optimal sheave protection
• Corrosion-resistant composite bearing sheave for extended service life
• Integrated swivel allows rotation for flexible line routing at the mast base
• 80mm (3-1/8") sheave diameter accommodates lines up to 16mm (5/8")
• Impressive 2200kg (4850 lbs) maximum working load capacity

Element blocks deliver the proven performance Harken is known for at a competitive price point by optimizing material usage without compromising strength or durability. The hardcoat-anodized finish ensures long-lasting performance in harsh marine environments, while the composite sheave bearing reduces friction and maintenance requirements.