Specification Brand : Respicefinem BulletPoint1 : Super Incisive Cutting : The drill bit has a super incisive cutting that reduces cutting force and breaking rate improving the quality of hole drill BulletPoint2 : High Hardness And Wear : Made of tungsten steel the drill bit has high hardness and wear avoiding breakage during use BulletPoint3 : Humanized Positioning Loop Design: The humanized positioning loop design reduces the machine's debugging time achieving precise opening BulletPoint4 : Multiple Sizes: The kit contains 10 mini twist drills of different sizes suitable for deep hole processing in different situations BulletPoint5 : High Quality Packaging: The high - quality packaging box protects the knife tip from accidental damage during transportation ItemName : Respicefinem 10Pcs Mini Twist Drill Tungsten Steel Circuit Board Repairing Engraving Spiral Bit Set With 0 6 To 1 5mm Sizes Super Incisive Cutting High Hardness Wear Humanized ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 10 centimeters ItemTypeKeyword : extra-long-drill-bits Manufacturer : Respicefinem ModelName : Respicefinemkz9pxshenf ModelNumber : Respicefinemkz9pxshenf NumberOfItems : 1 PartNumber : Respicefinemkz9pxshenf ProductDescription : Item Type: Mini Twist Drill Material: Tungsten steel Specification: 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm