Surepromise M5 (5mm) White Drill Hole Cover Caps - Blanking Furniture Kitchen Cabinet Shelf Designed with ridges on the stem of the cap. These ridges bite into timber-based materials to get their excellent grip. Look better and make cleaning the inside of cupboards much easier. When correctly fitted, the caps will not snag on cleaning cloths, or fall out accidentally. 5mm Holefix Caps are the easiest and cheapest way to hide unsightly shelf-adjustment holes in kitchens, wardrobes, office & flat-pack furniture. How to use - just firmly push them into place. They grip securely into position, ensuring caps cannot be easily removed again.This makes th caps ideal to use where children are able to access them