We have pretty much no wall space in our kitchen, so we really had to think about where to put them. The options were: on the side of the cupboards by sink (our choice), underneath the cupboards, or inside them. Because the slicing knife is so long (the blade alone is a foot), and to avoid accidentally snagging one doing things around the kitchen, this location seemed best. It's slightly creepy having sharp knives hanging at eye level, but we should adjust ok. The magnetic strips were $15.95 each and are 10 inches long. They come in a variety of lengths and you can buy them at Lowes and other places, but the shorter lengths are harder to find. Be sure you read reviews. Some strips out there don't have magnets that are strong enough to feel secure.