This is an assortment of different carving blades that can used to carve and shape the final dimensions of your plug. There are two different convex blades and one concave blade. Use these blades to cut cylindrical shapes and designs. The large contoured blade is designed for heavy-pressure cutting and trimming of rough edges. The 2107 and 2108 come with 2 blades per card. The 2109 and 2112 come with 5 blades per card. Handle 2107 is required and is not included.