The set is perfect for soap making, 10 slots for cutting the soap equally into 1 inch each. To protect it from being broken accidentally, the thickness of boards is increased to 0.6 inches, the last slot is lengthened to 1.5 inches, and pins are inserted into each slot. Two stainless steel cutters, straight and wavy, are sharp enough to slice the soap quickly and cleanly. It's not only for soap, but also wonderful for cutting loaf, dessert and pastry, etc. Inside width 4.7 inches and inside height 3.0 inches.