This is a boot-style letter opener by the famous knife designer, Blackie Collins. Although made of resin, it uses glass fiber-reinforced polymer, providing excellent strength, allowing it to penetrate plywood using a hammer. This item is currently very difficult to obtain. Please understand that this is a used item before purchasing. ※Warning: Those under 18 years of age cannot purchase this item. Misuse is strictly prohibited! ※No pets, no smoking.