Silver anodized. Mounts to 47-49mm diameter forks. The perfect way to install small EC approved front turn signals that go virtually unnoticed, until activated! Homogeneously bright LED units assure excellent visibility in traffic. The HeinzBikes 'Stairs' is a 2-piece locking system, allowing installation without disassembling the fork. Housing are CNC machined aluminum with an anodized finish for lasting good looks. - CNC machined aluminum housings - Anodized finish - Homogeneously bright LED - Excellent visibility in traffic - 2-piece construction - No fork disassembling required - 10-minute install