The HGL series is a range of products designed and developed by K8 in 1998. The series started with an ashtray and candle holder, made exclusivelyfor the restaurant Sult at Grunerløkka in Oslo. Several other products have been developed since in cooperation with Barbro Endresen. The product is made from concrete, which just becomes cooler the more it is used. The series is being hand made in Norway.