This Schumacher Racing Products Speed Pack supplies M3 button head screws in lengths ranging from 4mm to 20mm, giving you a versatile assortment of metric hardware for building or repairing Schumacher vehicles. The button head profile sits low and provides a broad bearing surface, making these a common choice throughout Schumacher chassis assemblies. These are factory replacement fasteners made to Schumacher specifications. Features: M3 thread pitch Button head profile for low-profile fitment Length range: 4mm to 20mm Metal construction 7/7/26 cs