This heat-resistant (up to 300) low voltage push-fit G4 capsule halogen light bulb has a few advantages over conventional oven light bulbs. Firstly it has tempered pins for reliable contact at high temperatures, secondly, it features an optimum halogen composition for high temperatures and finally, it has two to three times the luminous efficiency of conventional oven lighting.1A colour rendering index. Fitted with a G4 2-pin (4mm apart) base.Heat-resistant up to 300C.This G4 Capsule is a newer product from Osram and supercedes their old G4 Capsule part codes: 64428.