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The Metric M42 8% Cobalt Twist Drill Bits Set features 19 precision-engineered bits ranging from 1mm to 10mm, crafted from premium M42 cobalt steel with a 68-70 HRC hardness rating. Designed for superior heat, wear, and chip resistance, these bits excel at drilling stainless steel, hard metals, and more. The innovative 3-step split point tip ensures immediate bite and reduces walking, enabling faster, cleaner holes with less effort. Ideal for professionals demanding durability and precision, this set offers exceptional value by lasting significantly longer and running 3-5 times faster than standard drill bits.










| ASIN | B07MZQMPMC |
| Are batteries included? | No |
| Best Sellers Rank | #159,361 in Home Improvement ( See Top 100 in Home Improvement ) #1,225 in Drill Bit Sets |
| Brand | STROTON |
| Colour | Grey |
| Country of Origin | USA |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,361) |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 9.5 Millimetres |
| Date First Available | 2 March 2019 |
| Finish Type | Hardened |
| Hand Orientation | Right Hand |
| Included Components | drill bits |
| Item Weight | 454 g |
| Manufacturer | STROTON Ltd |
| Material | Cobalt |
| Net Quantity | 1.0 Count |
| Number of Flutes | 1 |
| Number of Memory Sticks | 19 |
| Number of Pieces | 19 |
| Package Dimensions | 17.6 x 12.5 x 4.4 cm; 453.59 g |
| Point Style | Split Point |
| Power Source | ac |
| Set Name | 1-10mm (19PCS) |
| Shank Type | Straight |
| Surface Recommendation | Metal, Plastic, Wood |
| Tool Flute Type | twist |
| UPC | 743829466298 |
A**R
Testate su acciaio da 5mm forando con la n.4 come pilota e sembra indistruttibile, le altre più grandi le usate solo per allargare il foro. La 4,5 usata come pilota si è spaccata al solo contatto con il pezzo, alcune si sono scheggiate lateralmente, probabilmente difetti di fabbricazione. Ho contattato il fornitore che mi ha subito inviato le punte in sostituzione, solo per questo meriterebbe 10 stelle. Provate su barra in ferro da 5mm e forano come se fosse burro. Consiglio pienamente l'acquisto.
K**I
Las compré para inoxidables y se soporta las cargas como todo con el uso prolongado van perdiendo filo pero dura bastante para su precio
J**I
Very good quality
C**6
La boite est assez qualitative et répond à ce qu'on lui demande. Les forets sont de très bonne facture et cela se confirme à l'usage. La coupe, que ce soit à l'entame ou pendant le percage, est très bonne. Il faut pour cela respecter les vitesses de perçage et parfois, l'utisation d'un lubrifiant de coupe sera nécessaire,, il serait urgent que les utilisateurs de forets sachent cela au lieu d'incriminer le foret. Un foret a casser, sans raison apparente. Après conact avec le vendeur, Stroton, un envoi de rechange m'a été envoyé très rapidement. Merci pour la réactivité et le sérieux de ce vendeur/marque.
H**T
Very good M42 grill bit. I used for 316 stein steel. It working well.
Trustpilot
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