Made of black metal, this bottle opener has a small hole near the end of its handle, with a small chain inserted for attaching it to a key ring, strap, or?  The "mouth-shaped", opposite, end fits under a bottle cap edge.  Then, a pull upward removes a non-screwable bottle cap. 

Measurements are:  Length:  1 7/8 inches;

                                Width:  about 7/16 inch.

Pre-owned, this opener is in good condition.