Schaefer Marine 303-09 Series 3 Cheek Block Flat Base Aluminum

The Schaefer Marine 303-09 is a high-performance Series 3 cheek block featuring a flat stainless steel base with aluminum cheeks and a Delrin sheave. Designed for sailboat rigging applications, this compact deck block combines durability with smooth operation for reliable line handling.

Key Features:

• Delrin plain bearing sheave for smooth, friction-free operation
• Stainless steel flat base distributes loads across a larger mounting surface
• Lightweight aluminum cheek construction
• 1000 lb safe working load capacity
• Accommodates line up to 7/16 inch diameter
• Four #10 fastener mounting holes with 2-3/8 inch center-to-center spacing

Specifications:

• Sheave diameter: 1-7/16 inches (37mm)
• Maximum line diameter: 7/16 inches (11mm)
• Overall length: 2-7/8 inches (73mm)
• Width: 1-3/4 inches (44mm)
• Height: 3/4 inches (19mm)
• Safe working load: 1000 lbs (450kg)
• Weight: 2.5 oz (71g)

This versatile cheek block is ideal for control lines, halyards, and general deck rigging applications where space is limited and reliable performance is essential.