M4 Aluminum Serrated Flanged Wheel Nut Now Available! M4 Nuts Without Any Nylon Locking Are Super Dialed, as Racers Love to Spin Them Off Easily When Cleaning Their Tires Each Run. These Machined Nuts Have No Nylon Insert, but With a Large Serrated Flange, They Are Extremely Secure. Don't Worry, These Wheel Nuts Won't Come Off in a Race. Available in Red, Black and Blue, Orange and Brown.