Specification Brand : flexman BulletPoint1 : [DURABLE HIGH SPEED STEEL] 4241 high speed steel construction ensures strength and durability for long-lasting use. BulletPoint2 : [HARDER DRILL BIT] Nitriding surface treatment enhances hardness, making the drill bit more durable and efficient. BulletPoint3 : [VERSATILE USAGE] Capable of drilling and expanding holes on iron and aluminum sheets up to 2mm thick, Suitable for various projects. BulletPoint4 : [COMPATIBLE WITH TOOLS] Works seamlessly with electric drills, bench drills, and more for added convenience and flexibility. BulletPoint5 : [COST-EFFECTIVE] Excellent quality and long service life help save costs in the long run, great for your projects. ItemName : FLEXMAN Step Drill Bit, 6‑30mm High Speed Steel Constructio Spiral Grooved Hole Cuttet Nitriding Black Electric Drill Accessories for Drill and Expand Hole ItemPackageDimensions_Height : 4 centimeters ItemPackageDimensions_Length : 11 centimeters ItemPackageDimensions_Width : 4 centimeters ItemTypeKeyword : step-drill-bits Manufacturer : flexman ModelNumber : flexmanyw84pdqfom NumberOfItems : 1 PartNumber : flexmanyw84pdqfom ProductDescription : Specification Item Type: Step Drill Bit Material: High Speed Steel Surface Treatment: Nitriding Black Total Length: Approx 100mm / 3.9in Package List 1 x Step Drill Bit