Reduction ring 150 mm, black, Round. Reduction ring is suitable for recessed spotlights with mounting springs. Outer diameter 150 mm (suitable for on-site ceiling cut-outs of up to 140 mm), inner diameter 68 or 74 mm (can be changed to 74 mm on the site), scope of delivery: 1 x reduction ring including 1 set of spring extension Material: Aluminium.