mm milling bits: 1 piece 6 mm x 12.7 mm x 12 mm, 1 piece 6 mm x 12.7 mm x 12 mm, 1 piece 6 mm x 12.7 mm x 17 mm piece of 6 mm x 12.7 mm x 25 mm, 1 piece of 6 mm x 12.7 mm x 38 mm, 4 pieces/set elevated; Carbide tip: The micro grain category provides the accumulated strength and the greatest resistance à the heat to avoid the accumulation of pieces of wood, resin and asphalt Application: The game of forests for toupies à top bearing cuts all composite materials, plywood, sheeting and resin