Spiral End Mill High Speed Steel 2‑Flute Straight Shank CNC Milling Cutter Tool Hardware4x6x11x55 Item Type: Spiral End Mill Material: High speed steel The Most Suitable Material: Acrylic, wood, compression, aluminum Can Also be Applied to the Following Materials: (1) Medium-density fiberboard, particle board, wooden boards, log boards, and stressed-skin diaphragm; (2) PVC, resin, plastic, particle board, composite board, melamine board; (3) Solid wood, logs, plywood, lotus board Application: CNC milling machine processing center, woodworking machine tool, advertising CNC milling machine, etc.  Size D(approx.) D1(approx.) L(approx.) L1(approx.) 2x6x7x51 2mm / 0.08in 6mm / 0.24in 7mm / 0.28in 51mm / 2.01in 3x6x8x52 3mm / 0.12in 6mm / 0.25in 8mm / 0.31in 52mm / 2.05in 4x6x11x55 4mm / 0.16in 6mm / 0.26in 11mm / 0.43in 55mm / 2.17in 5x6x13x57 5mm / 0.2in 6mm / 0.27in 13mm / 0.51in 57mm / 2.24in 6x6x13x57 6mm / 0.24in 6mm / 0.28in 13mm / 0.52in 57mm / 2.25in 7x8x19x63 7mm / 0.28in 8mm / 0.31in 19mm / 0.75in 63mm / 2.48in 8x8x19x63 8mm / 0.31in 8mm / 0.32in 19mm / 0.76in 63mm / 2.49in 9x10x22x72 9mm / 0.35in 10mm / 0.39in 22mm / 0.87in 72mm / 2.83in 10x10x22x72 10mm / 0.39in 10mm / 0.40in 22mm / 0.88in 72mm / 2.84in 11x12x26x83 11mm / 0.43in 12mm / 0.47in 26mm / 1.02in 83mm / 3.27in 12x12x26x83 12mm / 0.47in 12mm / 0.48in 26mm / 1.03in 83mm / 3.27in