SURMAG is our surface heat sink for our magnétic system, available in various sizes and finishes to suit any lighting project. Ref. 7IM20110-01. Black Ref. 7IM20110-90. Techncial White Ref. 7IM20115-01. Black Ref. 7IM20115-90. Techncial White Ref. 7IM20120-01. Black Ref. 7IM20120-90. Techncial White