4pcs or 6pcs per set, Each deck light (Material: Stainless Steel 304+ ABS) size is at 4cm diameter/ 2.54cm diameter han height 3cm,and Each Deck Light is illuminated by 2 pcs ultra-right LEDs, with Poly-Resin fully covered for waterproof, AC12V products, 1.5M Spacing, and with 5M extension cable, with outdoor use CE/GS/IP44 approved adaptor (Output: AC 12V / 6VA). Ready finished for indoor or outdoor use, Connectable. in color box packing. ***Remarks: 8pcs/set is also available. Photosensor Box and drill bit could also be supplied together with the light kit at your request.