| Product Name | 21Pcs Metric black oxide HSS twist Drill Bits Set | |||||||||
| Size | | |||||||||
| Material | HSS (HSS Cobalt M35 is Available) | |||||||||
| Process | Fully Ground (Rolled & Polished, Rolled, Milled are Available) | |||||||||
| Point Type | 135 Degree Turbo Max Point (118 Degree Split Point is Available) | |||||||||
| Shank Type | straight shank (Straight Shank, Reduced Shank are Available) | |||||||||
| Helix Angle | Regular Spiral Type N | |||||||||
| Surface Finish | black oxide (Bright, Amber Color,tin-coated, Black Oxide, Black & Gold are Available) | |||||||||
| Package | 21 Pcs Packed in metal Box | |||||||||
| Features | 1. HSS drill bit sets have extremely high hardness, in the drilling work has excellent processing performance, all grinding sharp ligament sticky milling work hole smooth no burr. copper and aluminum die steel alloy steel. | |||||||||