Black/Blue Cone Seat Super Lock Lug Nuts by Project Mu®. Thread Size: M12 x 1.5. Quantity: 20 Pieces. Includes: Heptagon Adapter. This high-strength nut has a heptagonal shape that prevents removal with ordinary tools, thus protecting your wheels from theft. Each lug nut has the signature Project Mu teal color cap with Project Mu logo on top. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.