Specification Brand : Walfront BulletPoint : Xindian's entire series of pliers are universal, with a disc diameter of 125/170. BulletPoint1 : SPECIFICATION: 10pcs carbide micro drill 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, can meet your using requirement BulletPoint2 : AVOID PARTIAL HOLE: The Spiral flute carbide drill bit cutting edges strictly avoid partial hole, confirm the quality, shank diameter is about 1/8 (3.175mm) BulletPoint3 : LONG LIFE: Micro drill bits have long life, it can drill 2000-5000 pcs under normal working conditions, also can return grinding 4-5 times BulletPoint4 : FEATURS: PCB circuit board drill set adopts materials and fine grinding process makes bit more acute cutting , reduce cutting force and broken drill, improve the quality of hole wall BulletPoint5 : LARGE SCRAPS DISCHARGE SPACE: PCB drill bit has a large scraps discharge space, little and smoothly during the scraps discharge, offer you better using experience BulletPoint6 : BulletPoint7 : Color : Black ExternallyAssignedProductIdentifier : 9498716583398 ExternallyAssignedProductIdentifier1 : 0789755003718 ExternallyAssignedProductIdentifier2 : 789755003718 IncludedComponents : Chain Vise ItemName : 10Pcs Mini Drill Tungsten Drill Set PCB Drill Bit Bits Set Micro Carbide PCB Spiral Drill Kit for Print Circuit Board Jewelry Engraving ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 10 centimeters ItemPackageDimensions_Width : 6 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : pin-vises Manufacturer : WALFRONT Material : Cast Iron ModelName : WALFRONT7khq84uw6p ModelNumber : WALFRONT7khq84uw6p NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : WALFRONT7khq84uw6p ProductDescription : Spec: Features: - 10pcs carbide micro drill 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm - Drill has a large scraps discharge space, little and smoothly during the scraps discharge - Use materials and fine grinding process makes bit more acute cutting , reduce cutting force and broken drill, improve the quality of hole wall. - The cutting edges strictly avoid partial hole, confirm the quality. - Long life, it can drill 2000-5000 pcs under normal working conditions, also can return grinding 4-5 times - Shank Diameter: approx. 1/8 (3.175mm) - Color: Because different production batches, product color will be random,hope you can understand. Thanks!