5 Series Single Block, Aluminum Cheeks, 5.0 oz.

Schaefer 5 Series single Aluminum Block with Delrin™ sheave ensures smooth operation with high safe working load.

Used extensively for sheet blocks on small- to mid-sized keelboats, and as control line blocks for larger offshore boats. Suitable as mast-base or lead blocks on small- to mid-sized boats. Adaptable universal three-way head. Black anodized aluminum or stainless steel cheeks. Stainless steel straps and posts. 

Key Features 

• 3-Way swivel head can be set to swivel 360° or can be locked to avoid twist
• Universal design suits diverse applications and mounting options
• Single with snap shackle and fiddle styles
• Smooth UV resistant, Delrin™ sheave
• Accepts Schaefer "universal" adapters for custom mounting
• High strength to weight ratio