SCHAEFER 504-25 Steel Swival Double Block Sailboat Rigging 7/16

( Brand: Schaefer ), ( Manufacturer Part Number: 504-25 ), ( Part Type: Aluminum Block ), ( Item Length: 5 5/8 ), ( Item Width: 1 15/16 ), ( Country Of Origin: United States )

Review SCHAEFER New Aluminum Stainless Steel Swival 7/16 Inch Double Block Sailboat Rigging

Introducing the Schaefer 504-25 Steel Swivel Double Block from Marlow-Rigging, a high-performance rigging solution designed specifically for sailboats. This double block and swivel set is made from robust, 7/16-inch diameter steel wire, ensuring unwavering strength and durability even in the most challenging sailing conditions.

Each block in this set features a full swivel design, allowing for smooth and efficient sheeting angles. The swivel mechanism is ingeniously engineered to reduce friction and wear, ensuring a long service life. The blocks themselves are meticulously machined for a precise fit and finish, and their large, open throats accommodate a wide range of sheeting lines.

The Schaefer 504-25 Steel Swivel Double Block is designed with versatility in mind. The blocks can be used in a variety of applications, including jib and spinnaker sheets, and are suitable for use with both wire and rope sheeting lines. The set also includes two high-quality stainless steel shackles, ensuring a secure and reliable connection to the boat.

This rigging solution is not only strong and durable, but it is also easy to install and maintain. The steel wire is pre-swaged and pre-terminated with thimbles, reducing the need for additional hardware and simplifying the installation process. The blocks are also designed to be easily serviced, allowing sailors to keep their rigging in top condition with minimal effort.

In summary, the Schaefer 504-25 Steel Swivel Double Block is an essential piece of equipment for any serious sailor. Its robust design, smooth swivel mechanism, and versatile applications make it an indispensable addition to any sailboat rigging setup. Whether you're cruising the coast or racing around the buoys, this rigging solution will provide the strength, reliability, and performance you need to take on the sea with confidence.

Schaefer 504-25 Steel Swivel 7/16 Double Block is a popular choice for sailboat rigging due to its durability and reliability. Here are some pros and cons that can help you make an informed decision about purchasing this rigging:

1. High-Quality Material: The Schaefer 504-25 Steel Swivel Double Block is made of marine-grade 316L stainless steel, which is known for its corrosion resistance. This makes it an ideal choice for use in harsh marine environments.

2. Swivel Design: The swivel design of this double block allows for smooth and easy movement of the rigging, reducing the risk of chafe and wear.

3. Double Block Design: The double block design allows for easy and secure attachment of the sail and the halyard, ensuring that the sail is properly hoisted and secured.

4. Durable: The rigging is designed to withstand heavy loads and repeated use, making it a long-lasting investment for sailboat owners.

1. Price: The Schaefer 504-25 Steel Swivel 7/16 Double Block is more expensive than some other rigging options on the market.

2. Weight: The use of high-quality stainless steel makes this rigging heavier than some other options, which may be a consideration for some sailboat owners.

The Schaefer 504-25 Steel Swivel 7/16 Double Block offers several advantages for sailboat owners, including its high-quality material, swivel design, double block design, and durability. While it may be more expensive and heavier than some other options, its long-lasting performance and reliability make it a worthwhile investment for those who prioritize the safety and functionality of their sailboat rigging.

If you are looking for a reliable and durable sailboat rigging solution, the Schaefer 504-25 Steel Swivel 7/16 Double Block is an excellent choice. Its high-quality material, swivel design, double block design, and durability make it a worthwhile investment for sailboat owners who prioritize the safety and functionality of their rigging. However, if budget is a concern, you may want to consider other less expensive options that still offer good performance and reliability.

Details:

His collection was large enough to create a Cowboy Museum. I am selling this for a Dear Friend who inherited it from his Father. Closest I could find is a #504-25.

part #: 50425 prices

• $74.95-$114.95

specifications sailgrinch:

• brand: Schaefer
• mpn: 504-25
• part type: Aluminum Block
• item length: 5 5/8
• item width: 1 15/16
• country of origin: United States

payments sailgrinch:

• other
• credit card: Visa
• wallet: Paypal

general sailgrinch:

• condition: New
• Boat Parts > Sailing Hardware Gear > Other Sailing Hardware Gear

returns sailgrinch:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

seller sailgrinch:

• city: Prescott, Arizona
• # reviews: 3334
• rating: 100.0%

offer sailgrinch:

• started: January 16, 2026
• options: Ship-to-home
• availability: In Stock
• best offers: True
• quantity: 1
• sold: 0

shipping sailgrinch:

• type: Fixed
• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• transit: 5-10 Days
• cost: $9.50

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