Give shape to your most imaginative clay creations with these budget-friendly Potters Select Fettling Knives. Made from non-toxic materials, these tools feature wooden handles with metal blades that cut smoothly through most types of clay. The slim blades can be used to trim away excess material, carve openwork designs into pottery, smooth away rough seams, level out uneven glaze, and more. - Potter's Select Fettling Knife - Hard.