Brass Spacer Holder + m2, 5 M3 Stainless Steel Nut & Screw Set for Raspberry Pi 4 Model B/3B + Development Board Accessories Screws Feature:1, M2.5 Threaded Hexagonal Male-Female Brass Spacer/Stainless Steel Screw Nut Set.2, Waterproof, Rust-proof.3, Assorted in plastic box for convenient carrying and storage.4, Easy to install.5, Durable to use.6, for Raspberry-Pi or other projects. Specification:Material: Brass (spacer), stainless steel (nut and bolt)Suitable for Raspberry Pi 4 board Model B/3B + Orange pi UNO R3Package list:10pcs M3X20 female to female with female thread copper post20pcs M2.5 nuts10pcs M3X10 + 6 male to female copper screw (internal and male thread)10pcs M3X30 + 6 male to female copper screw (internal and male thread)10pcs M3X20 + 6 male to female copper screw (internal and male thread external)20 pcs. Inner diameter 3mm, thickness 3mm gasket20pcs M3X6 countersunk screws10pcs M3X30 female to female female with female thread copper column12pcs M2.5X12 countersunk screws50pcs M3 nuts10pcs m2, 5x11+6 male to female copper screw (inner and male thread)6pcs M2.5X6 countersunk screws10pcs M2.5 nutNote:Item color displayed in pictures may be showing slightly different showing on computer monitor, because monitors are not calibrated the same.