stainless steelThis's a tube key. Helps you get every last little bit of toothpaste or shaving cream or anything else that comes in one of those tubes.Easy to Use. You put it on the end then roll the tube up right around it till your whatever starts coming out. Works well for getting all the paint.These metal squeezer keys work best with metal tubes. If the tube containing you product is made of plastic, the tube will want to unwind itself.Size: 3.1" x1.4"/ 8cm*3.5cm. Compact, sturdy, and works for big tubes or small. Cut down on waste Very useful tool to maximize your shaving cream or balm dollar.If you are looking for a roll-up key for your toothpaste (or other) tubes, this may be a good choice. Helps get the last bit of whatever out of the tubes. Toothpaste, hair color, face creams, etc. A wonderful little tool.