The slots are magnetized to secure knives in the holder. Overall, we'd say The Ex Knife Set is very cutting edge! * Razor sharp precision cutting blades * Magnetized slots to secure knives in holder * Set includes plastic figure plus: 8" Chef Knife, 8" Bread Knife, 8" Carver, 5" Utility Knife, 3.5" Parer * Dimensions: 14.6" tall x 8" wide x 12" deep * 25 year warranty