Light strings attach to the clip through wire guides to securely hold lights with 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. These clips provide a simple solution for installing the hard-to-handle products such as icicle lights using the innovative utility hook. Details:1" x 3.25" x 0.75"50 packEach clip accommodates C7, C9, mini Christmas lightsPlastic