Grade 316 Stainless Steel Axle/swingarm Nut - Machined, with captive washer. M18 x 1.50mm (24mm Socket Size) Fits many bikes. Highly resistant to corrosion and polished to a smooth mirror finish making a good replacement from rusty originals. Looks great when fitted with Aluminium Adjuster Blocks and Axle Adjuster Bolts and Nuts. Individually priced.