Linoleum Cutter, Speedball

It's designed to carve into linoleum blocks or other soft carving materials to create relief prints. 
Features:
The handle typically features a hand-adjustable metal chuck for easy insertion and removal of different cutter blades, and often includes a twist-off cap for storing the cutters inside the handle. 
Blades:
Speedball lino cutter sets come with various interchangeable blades (e.g., V-gouges, U-gouges, and knife blades) for different carving effects and levels of detail. 
Materials:
The cutters are made of high-quality steel with sharp edges, suitable for both soft and hard carving surfaces.