The Loon Applicator Bottle with Cap and Needles consists of the following, One Ounce Bottle, 18 Gauge Needle Applicator, 20 Gauge Needle Applicator. You will find this product works best with Loon’s Head Cement and Head Finishes system. Use to store and thin cements, finishing products and paints at your fly tying bench. Includes everything you need to make fly tying easier. Clean Needles after each use with appropriate Cleaner and Monofilament.