Schaefer Stand-Up Swivel block allows full rotation and articulation.
Schaefer Stand up spring block ensures smooth operation and a high safe working load. Anodized aluminum cheeks and stainless steel mount allows for effortless running.
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. Black anodized aluminum or stainless steel cheeks. Stainless steel straps and posts.
