M2 Bolt & Hex Nut Set, Pitch 0.4, Wrench Size 4, Iron, Nickel Plated. Although the bolts and nuts are from different manufacturers, the sizes match. For those who only need a little bit ✨ 5 sets per set, additional sets are 80 yen/set, 4 sets remaining. Since this will be sent via regular mail (without tracking or compensation), we do not accept any returns, refunds, or exchanges. If you want tracking and compensation, you can change to Yu-Yu Mercari Bin or Raku-Raku Mercari Bin for an additional fee. Please read the self-introduction. No price negotiations. Delivered via standard mail, simple packaging. No claims, no returns. I have a cat, so there may be overlooked hairs. Please refrain from purchasing if you are allergic to cats.