The replacement buttons give instant extra space when your pants'size is too tight, or reducing your waist size when your pants are too loose. It's also a excellent replacements for missing button.Button caps diameter: 17mm/0.67inchEasy to install:1. Make a small hole in the place that you want to install the button.2. Put the nail through the hole from backside, and put the cap on from the other side.3. Just use the screwdriver to screw or unscrew for quick and easy button replacement for your jeans, trousers or jacket.Note: Do not overexert yourself during installation. Keep out of reach of children to avoid accidental ingestion.: Products are shipped quickly from the US warehouse. If you are not satisfied with the product, you will get a 100% refund.