In one embodiment, a tool container system includes a container with base and cover pivotably attached by a hinge, base and cover locking members, and a latch moveable between unlatched and latched positions to allow or prevent movement of the cover relative to the base. The system also includes a utility knife blade retainer configured to be received in and held by the container, the retainer configured to define a generally trapezoidal shape and contact multiple faces of blades received therein. The retainer comprises an engagement feature to engage with the container to limit movement of the retainer. In another embodiment, a knife blade retainer is configured to be received in a container. The retainer includes a generally trapezoidal shape defined therein to contact multiple faces of a trapezoidal shape of blades received therein. An engagement feature engages with the container to limit movement of the retainer within the container.

This unique and novel exemplary embodiment of an invention relates to a multi-use tool used for handling and preparing a variety of herbal products for smoking or consumption. The multi-use tool comprises a substantially compact, flat profile that allows the multi-use tool to be conveniently stored and readily accessible when needed. The multi-use tool provides a combination of tools specially designed for preparing and handling herbal products.

An interchangeable cutlery system has a blade handle incorporating a quick-change blade mechanism. A selected one of a plurality of blades can be removably attached to the handle via the mechanism. The plurality of blades include a filet knife blade, a back-serrated fillet knife blade, a clip point knife blade, a gut hook knife blade, a saw blade, a fish scaler, and a large bush craft blade.

An interchangeable cutlery system has a blade handle incorporating a quick-change blade mechanism. A selected one of a plurality of blades can be removably attached to the handle via the mechanism. The plurality of blades include a filet knife blade, a back-serrated fillet knife blade, a clip point knife blade, a gut hook knife blade, a saw blade, a fish scaler, and a large bush craft blade.

A ceramic sintered body of the present disclosure contains zirconia as a main component, includes a plurality of sintered body crystals and a grain boundary part located between the plurality of sintered body crystals, contains at least CeO.sub.2, and has a content of Ce higher in the grain boundary than in a central region of the sintered body crystal.

A knife includes a blade having a first side face and a second side face. The blade includes zirconia as a main component, and includes a cutting region including at least a ridge portion between the first side face and the second side face. When a portion including the cutting region in the first side face is referred to as a first cutting face, and a portion including the cutting region in the second side face is referred to as a second cutting face, the proportion of cubic crystals of zirconia in the first cutting face is larger than the proportion of cubic crystals of zirconia in the second cutting face.

A knife includes a blade having a first side face and a second side face. The blade includes zirconia as a main component, and includes a cutting region including at least a ridge portion between the first side face and the second side face. When a portion including the cutting region in the first side face is referred to as a first cutting face, and a portion including the cutting region in the second side face is referred to as a second cutting face, the proportion of cubic crystals of zirconia in the first cutting face is larger than the proportion of cubic crystals of zirconia in the second cutting face.

Provided is a blade material having high strength. The blade material contains, in % by mass, 0.5 to 0.8% of C, 1.0% or less of Si, 1.0% or less of Mn, 11 to 15% of Cr, and 0.1 to 0.8% of V, the remainder includes Fe and inevitable impurities, and has a thickness of 0.5 mm or less, wherein the structure of the blade material as observed after polishing the surface thereof has ferrites and carbides, the carbides have an average particle diameter of 0.5 μm or less, and a proportion of carbides containing V in the carbides is 50% or less in terms of a proportion in an area of a field of view.

Provided is a blade material having high strength. The blade material contains, in % by mass, 0.5 to 0.8% of C, 1.0% or less of Si, 1.0% or less of Mn, 11 to 15% of Cr, and 0.1 to 0.8% of V, the remainder includes Fe and inevitable impurities, and has a thickness of 0.5 mm or less, wherein the structure of the blade material as observed after polishing the surface thereof has ferrites and carbides, the carbides have an average particle diameter of 0.5 μm or less, and a proportion of carbides containing V in the carbides is 50% or less in terms of a proportion in an area of a field of view.