High quality material: high quality steel handle, light and flexible, wear-resistant and durable, high strength and high hardness. Excellent performance: The chuck has precision high engraving capacity and tight and stable clamping, which can improve work efficiency. Standard Size: The milling chuck has 3 different inner diameters, including 6mm, 6.35mm , 8 mm. The height is 20mm. Wide ApplicationThe cutter chuck is suitable for engraving machines, cutting engraving machines, woodworking milling cutters, woodworking cutters, etc.Excellent Value for Money Package: Comes with 6 pieces of milling adapters in 3 different sizes, 2 pieces of each size. Sufficient quantity and different sizes can meet your different needs. Features: The tool holder is made of high quality steel, with good flexibility, stable performance, high strength, high hardness, wear resistance and durability. 3 different sizes of collet adapters (6mm 6.35mm 8mm) can meet your different needs in your daily work. Specification: Material: Steel Package includes: 2 x 6 mm collet adapters, 2 x 6 mm collet adapters, 35mm, 2 x 8mm clamps. Please review product information before purchasing.