If you're installing or replacing a sink waste drain, especially one compatible with the T&S Brass model 017670-45, this specialized tool is a lifesaver. It's designed to fit perfectly into the drain assembly, giving you the leverage and grip you need to tighten or loosen it without damaging the finish. Trying to do this job with pliers or an adjustable wrench can slip and scratch the chrome or brass, which is frustrating. This tool is made to engage securely, making the installation process much smoother, faster, and more professional. Whether you're a DIY plumber tackling a bathroom or kitchen sink, or a professional looking for the right tool for a specific fitting, having this on hand saves time and prevents headaches. AppliaFit makes replacement parts and tools, so you know it's designed for compatibility. If you've got that specific T&S Brass drain to work on, this single-purpose tool is totally worth it to get the job done right.