The C&H Precision plates are designed, manufactured and shipped from our small family owned business in Coastal Georgia. Each plate is precision machined to the tightest tolerances on HAAS CNC machines and each plate goes through multiple quality checks before shipping to our customers. SPECIFICATION: Material: Plates are made from Mild Grade steel. All mounting hardware is Stainless Steel Finish: Plates are Electro Deposition Painted - Black INCLUDED: Qty 1 - Optic Plate Qty 3 - 8-32 x .250 LSH Plate Mounting Screws Qty 3 - M4 x 6 MM M3H Plate Mounting Screws Compatible FirearmsStaccato C, Staccato C2, Staccato CS, STACCATO DUO(TM), Staccato P, Staccato XC, Staccato XL Compatible OpticsHolosun 509T