・ Brass stoplight-shaped skull whistle (Total length: approx. 6.5 cm including the ring) ・ Brass antique reproduction good luck key (Total length: approx. 4.5 cm) ・ Brass hammered shackle This is a set of the above three items. Adding these to your existing keychain will give it a very stylish look. The skull whistle is functional as a whistle, so it may be useful as a survival item when hiking or in a disaster. It is recommended as an EDC item like a Leatherman or Victorinox. Personally, I think it looks cool to hang it from your waist like in the third photo. I think this item is perfect for those who like Glad Hand, Weird, RADIALL, galcia, Gangsterville, Good Worth, Storm Beck, Cluct, etc.