Sailors and boating enthusiasts, Schaefer blocks are pretty much the gold standard in marine hardware - and this 5 series single block is no exception. Made in the USA since 1966, you know you're getting quality that's been tested on the water for decades. The spring-loaded design is genius - it allows for up to 45 degrees of lead variation on either side of the track, which gives you so much flexibility in your rigging setup. The Delrin sheave is UV-protected and super smooth, reducing friction on your lines beautifully. The 6061-T6 aluminum alloy cheeks are hard coat anodized for maximum corrosion resistance, while the 316 stainless steel components can handle the harsh marine environment. The 1-inch T-track slider makes installation straightforward, and the overall 25mm size is perfect for various applications on smaller to medium-sized boats. That 'Spring Cap' design everyone talks about? It fully supports the block under any conditions, so you get reliable performance even when the weather turns rough. Whether you're building new rigging or upgrading existing systems, this block delivers the legendary Schaefer strength and reliability that serious sailors depend on. It's one of those pieces of hardware that just works, season after season.
Free 30-day returns 
Free 30-day returns
