These high-quality Flat Head Hex Machine Screws provide replacement parts for your kit supplied itemsFeatures:Strong and durable steel for long-lasting performance - Precision manufactured threads for consistent fit and fast servicing M4 x 18mm (Metric 4mm Diameter x 18mm Overall Length) Flat Head Hex configurationIncludes:4 x M4 x 18mm Flat Head Hex Machine Screw