Features: Protective Cover -- Protective Cover Made of high quality material, durable and practical. Suitable for mini drill, grinder, etc. Clamp -- Fixed scop 10-51mm, Ideal for holding small parts, Jewelry, Watch, Hobby, Model making, Electronics, Home and Work-Bench and many other applications. 20pcs Brass Collet -- Clamping diameter: 0.5mm/0.8mm/1.0mm/1.2mm/1.5mm/1.8mm/2.0mm/2.4mm/3.0mm/3.2mm (1/64 inch, 1/32 inch, 3 /64 inch, 3/64 inch, 1/16 inch, 5/64 inch, 5/64 inch, 3/32 inch, 1/8 inch, 1/8 inch). Compatible with most rotary tools such as hardware, hobbies, homes, etc.; suitable for installing drills, electric grinders, hanging mills, hoses, etc. 3 Types of Blades Meet Your Needs -- CUTTING, GROOVING & TRIMMING. Package includes: 6 x HSS cutting circular saw blades, 10 x of resin cutting blades, 30 red resin cutting blades & 3 extension rods. 6.35mm Shank 0.3-4.0mm Keyless Chuck -- A handy universal multi chuck with Shank for keyless, wrench free and easy accessory changes on your Power Drill, Rotary or Router Tool. The Chuck holds accessories without using a collet, providing quick and easy accessory changes. It is ideal for when the job requires numerous accessory changes. Specification: 4.8mm Shank Collect Chuck: 0.5, 0.8, 1.0, 1.2, 1.5, 1.8, 25.0, 2.4, 3.0, 3.2 4.3mm Shank Collect Chuck: 0.5, 0.8, 1.0, 1.2, 1.5, 1.8, 25.0, 2.4, 3.0, 3.2 Rotary Cover: 55*16*30mm Rotary Clamp: 51*66*26mm Keyless Rotary Clamp Range: 0.3-4.0mm Fiber Cutting Disc: 34mm HSS Cutting Disc: 50mm, 44mm, 35mm, 32mm, 25mm, 22mm HSS Cutting Disc Mandrel Shank Dia: 1/4in (3.175mm) Packing List: 10 * 4.8mm Shank Collect Chuck 10 * 4.3mm Shank Collect Chuck 12 * Fiber Cutting Disc 2 * Cutting Disc Mandrels 6 * HSS Cutting Disc 1 * HSS Cutting Disc Mandrel 30 * Resin Cutting and Sanding Disc with Collection box 2 * M8x0.75mm Keyless Rotary Clamp with a 6.35 Hex Shank 1 * Rotary Cover 1 * Rotary Clamp