Zirconium "Monster" sized keychain lanterns! A stylish way to keep track of your keys in the dark! Measuring 1-1/4"long by 1/2" diameter these are machined from a solid bar of Zirconium and finished in a bead blast black finish. 30 circumferential holes allow the light to shine out. These lanterns come with a Blue or Toxic grren 3x22.5mm insert.