High quality Wratten coloured glass threaded filters for 1.25-inch barrel eyepieces. Available in multiple colours. #8 Light Yellow (83% transmission) #11 Yellow/Green (78% transmission) #12 Yellow (74% transmission) #21 Orange (46% transmission) #23A Light Red (25% transmission) #25 Red (14% transmission) #38A Dark Blue (17% transmission) #47 Violet (3% transmission) #56 Light Green (53% transmission) #58 Green (24% transmission) #80A Blue (30% transmission) #82A Light Blue (73% transmission) Each filter ships in a protective container.