Use this manual adjustable jar lid opener for smooth metal twist-off lids around the kitchen, such as jar lids, storage jar lids, condiment bottle lids, and other compatible bottle lids within the stated size range. The adjustable clamp is intended for lid outer diameters from 0.39 in to 4.01 in, so measuring before purchase is recommended. The opener is made with a 430 stainless steel body, PP handle, and rubber grip pads. To use, adjust the clamp, clamp it onto the lid, hold the jar or bottle with one hand, and turn the handle counterclockwise with the other hand. You will receive 2 jar lid openers and 4 extra rubber grip pads. This is a manual two-hand opener, not an electric opener and not a one-handed opener. It is not designed for crown beer bottle caps, pull-tab cans, or can-piercing. Instruction manual is not included. Manual Opener for Twist-Off Lids: Designed for smooth metal jar lids, storage jar lids, and bottle lids in everyday kitchen use. Adjustable Size Range: Fits lid outer diameters from 0.39 in to 4.01 in; measure the lid before purchase for a better fit. 430 Stainless Steel Body: Made with a 430 stainless steel body, PP handle, and rubber grip pads to help clamp the lid when positioned correctly. Adjust, Clamp, Turn: Adjust the clamp, place it on the lid, hold the container with one hand, and turn the handle counterclockwise with the other. What You Receive: Includes 2 jar lid openers and 4 extra rubber pads; no instruction manual. Not for crown caps, pull tabs, or can-piercing.