Randy's Black Label Res-Tips 100PK The Randy's Res-Tips we're designed with you in mind. Res-Tips are durable cotton swabs that are perfect for use on concentrate rigs. One side has a tapered end for those tedious, hard to reach parts of your smokewares like corners or bases. While the other end is an enlarged standard tip with plenty of surface area to soak up all residue. We believe that quality pieces deserve a quality cleaning and Randy's is here to contribute to that by offering a simple swab with a special twist.