Store › Dzus Button – 5/16 – .400 Grip Image 1 of 1 Dzus Button – 5/16 – .400 Grip $2.49 5/16″ x .400 Grip Steel, Zinc Plated Dzus Button. Suits most micro sprint chassis brands Add To Cart Added! 5/16″ x .400 Grip Steel, Zinc Plated Dzus Button. Suits most micro sprint chassis brands