SCHAEFER 51mm 5 Series Block - Snap Shackle, 504-09

Schaefer Single Aluminum Block with snap shackle swivel head provides maximum flexibility.

5 Series blocks offer small to medium-sized cruising and racing yachts an extremely high strength/weight ratio resulting in a highly refined and reliable block. The versatile universal head design has a three-way built-in locking feature and accepts Schaefer "universal" adapters for custom mounting.

5 series blocks are offered with Aluminum cheeks and plain bearing sheaves (504 series), Stainless Steel cheeks and plain bearing sheaves (505 series) and Aluminum cheeks and Delrin (tm) ball bearing sheaves (506 series).

Note: Special Order Only

• 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
• Tough, hard coat-anodized aluminum cheeks 
• Smooth UV resistant, Delrin™ sheave
• Accepts Schaefer "universal" adapters for custom mounting
• High strength-to-weight ratio