S14 Clear Outdoor Patio String Light Set - Black Wire - 37.5' Long - 25 S14 Bulbs Novelty Lights Clear S14 medium base bulbs string light set with 25 bulbs on 37.5' of commercial grade Black wire. These are our most durable string light sets and are suitable for year round outdoor use and permanent lighting applications. Each set includes 25 S14 medium base bulbs on a commercial grade Black wire stringer with 25 sockets that are spaced 18" apart. These Clear S14 light strings have long-lasting 6,000 hour bulbs and are on a heavy duty 16 gauge SPT-2 Black wire stringer. Each socket is made with PVC plastic to provide a water-tight seal and to ensure no defects due to weather. These durable and heavy duty light strings will provide you with years of maintenance free use. Your satisfaction is our #1 priority and if you have any issue at all, please contact us and we would be happy to assist.