Truglo's tritium night sights transition from standard white dot sights during the daylight, to glowing green dots in the dark - no batteries or light exposure required.Assembled in the usa with quality swiss tritium for maximum brightness, these sights utilize cnc-machined steel construction with a snag-resistant design fitting standard holsters, and truglo's fortress finish permanent protective coating for maximum protection.This sight set is compatible with kimber 1911 with fixed rear sight.Rear Color: GreenType: Front/Rear SetFrame Material: SteelFrame Color: BlackFirearm Fit: Kimber 1911Style: SquareFront Material: TritiumRear Material: TritiumFront Color: GreenFirearm Type: Handgun