Salsa 1.75 Available Flat Thru Axles
About Salsa - "At Salsa, we believe a sense of adventure makes life better. The bicycle can be so much more than just a bike; it's a path to new places, new people, and amazing experiences."
These models are available for online purchasing and can be shipped directly to you.
Usually flat or conical. This is the shape of the washer and should match your frame or fork.