Product Description Perfect for replacing the stock castle nut and cotter pin. Also replacement for all other brand 20 mm axle nuts. Bolt M20 Axle Nut at Motosport Browse all Motosport deals $6.99 In Stock at Motosport Price verified today Buy Now at Motosport Secure checkout Easy returns or compare prices Amazon eBay Product Details Category AXLE END NUT Brand Bolt Gender Unisex Condition New MPN AXN20 Bolt