ITEM NAME:10pcs 1.5-6mm HSS Straight Shank 4 Flute End Mill Cutter CNC Drill Bit Tool set 100% brand new and high quality Material: HSS & aluminum Color: as shown in pic Specification: Shank: straight shank Flutes: 4 Outside Diameter: 1.5mm,2mm,2.5mm,3mm,3.5mm,4mm,4.5mm,5mm,5.5mm,6mm Durable and practical Four flute design provides small chip loads and quicker removal Application Material: wood, plastic, aluminum plate, etc Suitable for DIY, home and general building/engineering using SIZE(mm) Diameter of Head(A) Diameter of Shank(B) Blade Length(C) Total Length(D) 1.5 6 4 5 0 2 6 7 51 2.5 6 8 52 3 6 8 52 3.5 6 10 54 4 6 11 55 4.5 6 15 60 5 6 13 57 5.5 6 13 57 6 6 13 57 Quantity: 10pcs Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 10PCS X Drill Bits.Material: HSS & aluminum. Four flute design provides small chip loads and quicker removal. Shank: straight shank. Color: as shown in pic. Blade Length(C). 10PCS X Drill Bits. Quantity: 10pcs. Total Length(D).