



Lock Fly Reel System Black Spool Only
Our Lock spare spools are not just future-proof, they are brand proof also. Lock spools are being built as a shared standard across every Sunray reel going forward, and across our sister company, Finner too. That means you’ll be able to buy Sunray and Finner fly reels with total confidence: the same Lock spools will fit both brands, forever, for any reel.
No dead spools. No forced upgrades. Just one spool system that stays useful forever.
The Lock Fly Reel System isn’t just the easiest-to-use cassette fly reel; it’s a revolutionary approach to how we buy and use fly lines. Traditionally, 76% of a fly line’s weight is packaging, and with backing, that rises to 95%. Add the environmental cost of shipping non-recyclable packaging, and the inefficiency is clear.
Lock Fly Lines eliminate all that waste. Pre-loaded on Lock spools, there’s no plastic or cardboard to dispose of—just plug the line straight into the reel. No packaging, no waste, no environmental impact. Simplicity and sustainability, all in one system.
You can easily load your own backing and fly lines onto Lock spare spools. These spools are designed to be fully compatible with every fly reel Sunray will produce in the future. Please keep them.
We encourage you to research how to properly dispose of fly line packaging. Studies show that 80% of claims about recyclability made by brands are false, leading to unnecessary waste. For a deeper understanding of consumer waste, we recommend watching Buy Now on Netflix, which highlights the true environmental impact of product packaging. Let’s work together to reduce waste and make a positive impact on the planet.


Don't panic, you can use your own fly lines too.
The fastest and easiest to load spare spool in the World
Our Lock spare spools and Lock hub are the result of 4 years of innovation—self-locating, self-aligning, and sight-free loading. You can literally load them with your eyes closed.
96% in the bin.
Don't believe the hype
Did you know that 96% of fly line packaging ends up in the bin? Why go through the hassle of buying backing and fly lines, paying for shipping, throwing away the packaging, and then tossing the product packaging too?
Many brands make bold claims about their eco-friendly credentials, but these often amount to greenwashing without real impact. Recycling, while valuable, is far less effective than assumed. Plastics are difficult to recycle due to contamination and the variety of polymers, with most ending up in landfills or incinerators.
Cardboard faces challenges too—wet or soiled materials are often non-recyclable. These limitations highlight the need for genuine solutions, like reducing waste at the source and creating products that eliminate unnecessary packaging, rather than relying on recycling systems that often fail to deliver on sustainability promises.





















