This basin wrench is a neccessary plumbing tools in tight spaces, used to tighten and remove the mounting nuts of kitchen or bathroom sink faucets, underside of the sink behind the basin This under sink wrench faucet tool with spring load self-adjusting gripping jaws for faucet nuts across flat 3/8'' to 1-1/4'', 180°rotating head to be perpendicular to 11in long T bar handle during use Key Step 1 to use: Adjust the plumbing wrench head by pivoting the head so it is perpendicular (90-degree angle ) to the shaft and clamp the claw onto the mounting nut beneath faucet, grip and go clockwise to tighten/counter-clockwise to lossen and remove the nut Key Step 2 to Use: Try to turn the multifunctional sink wrench, so the ridged jaws of the claw grip and hug tightly the notches or edges of the nut, and turn the basin wrench by two hands on the T-bar, or slide the bar all the way to one side and lever it with one hand Some tips to Use: Try with a piece of sandpaper between the stubborn nut and the jaw in case of slipping; Use a pipe or the back end of an adjustable wrench to increase your leverage on a T-bar