Arrows of the highest quality built with excellent materials assembled in a perfect design. The set includes 4 arrows in black anodized 6061 billet aluminum with locking ring in C360 brass machined from solid. Each indicator comes complete with clear lens and amber lens so that you can assemble the arrows according to your needs. 12v Osram amber bulbs included in the package. MEASUREMENTS: APPROVED lenses diameter 40mm STAINLESS STEEL stem Ø 10 mm - length 30 mm