Owfeel Pack of 100pcs M312MM Button Head Hex Socket Cap Screws 304 stainless steel bolts Size: approx. 1.4X0.6cm/0.55x0.24 inch. Made from stainless Steel 304. Suitable for machinery and industrial fasteners. Metric thread: M3. Owfeel is registered trademarks,has been filed in the Amazon,and only authorized this exclusive shop to sell,if find out follow-sell or counterfeit,it is infringement,we will pursue legal responsibility.