ADJUSTABLE JAWS: The spring-loaded jaws can automatically adjust to fit most sink strainer lock nuts, not easy to slip, which is a must-have tool at home One-Hand Adjustment: The thumb notch design conforms to the ergonomically contoured grip, and can be easily adjusted to the opening size you want with one hand, up to 4.75 inches SOFT GRIP：Dual-color grips provide user comfort, and the conspicuous colors help you find tools quickly and easily in messy areas DURABLE STEEL CONSTRUCTION: Strong steel body, prevents scratches, rust and corrosion, allowing you to easily wipe off dirt and grease. Suitable for long-term use by professionals EASY TO USE:The lock nut wrench is used to tighten and remove sink strainer lock nuts on strainer baskets, which can be used with basket strainer wrench