Light strings attach to the clip through wire guides to securely hold lights. No forcing or twisting Each clip is perfect for aligning icicle lights on gutters in traditional horizontal orientation, and also work great on clay tile roofs, or for unique installations Clips provide a simple solution for installing the hard-to-handle products such as mini, icicle and C lights, using the innovative utility hook Dimensions: 0.75"H x 2.75"W x 0.5"D Material(s): plastic Pack includes 50 of the clip shown