Schaefer Double Block/ Universal Head

The Schaefer Double Block/ Universal Head #504-25 is your go-to solution for small to medium cruising or racing yachts, offering an impressive strength-to-weight ratio. With its versatile Universal Head design, it provides reliability and precision, making it suitable even for larger yachts in combination with bigger series blocks. Choose between durable stainless steel or hardcoat anodized aluminum for a block that is both stylish and practical.

Features & Benefits

• High strength-to-weight ratio for optimal performance.
• Universal Head design allows for versatile mounting options.
• Available in stainless steel or hardcoat anodized aluminum for enhanced durability.
• UV-protected Delrin or Delrin Ball Bearing sheaves ensure smooth operation.

This stainless steel block features cheeks crafted from tumbled and polished stainless steel or hardcoat anodized aluminum, ensuring resistance to corrosion and cracking. The sheaves are made of high-impact Delrin or Delrin running on Delrin Ball Bearings, providing exceptional durability and smooth functionality. Ideal for mainsheet and boom vang systems, it's a reliably engineered piece of sailing gear.

Length: 129 mm (5 1/16 in)
Overall Thickness: 42 mm (1 21/32 in)
Sheave Dia.: 51 mm (2 in)
Sheave Width: 14 mm (9/16 in)
Max. Line Dia.: 11 mm (7/16 in)
Pin Dia.: 6 mm (1/4 in)
Safe Working Load Aluminum: 795 kg (1750 lb)
Weight: 235 g (8.3 oz)