This all metal construction keychain is shaped like an actual piston and connecting rod. The bright chrome plated piston articulates on the connecting rod like the real thing. The piston head features a choice of images: BKG logo, Vintage Motorcycle Logo or Hotrod Logo under a heavy duty epoxy dome. This keychain is great for holding the keys to your favorite ride. With something nice like this, you’ll never lose your keys again! Approximate length is 2 and a half inches long.