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The Hymnorq 40-Pc M35 Cobalt Twist Drill Bit Set features premium 5% cobalt high-speed steel with a Rockwell hardness of 65-67 HRC, delivering superior heat resistance and durability. This fully ground, precision-balanced set includes 40 bits across four popular fractional sizes, designed with a 118° chisel point and dual-flute geometry for efficient chip removal. Finished with a bronze coating and straight shanks, these bits excel in drilling hard metals, plastics, and wood, making them an essential toolkit upgrade for professionals and serious DIYers alike.
| ASIN | B07RKRKMBX |
| Best Sellers Rank | #164,929 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #302 in Jobber Drill Bits |
| Brand | HYMNORQ |
| Brand Name | HYMNORQ |
| Customer Reviews | 4.4 out of 5 stars 160 Reviews |
| Cutting Angle String | 118 degrees |
| Cutting Diameter | 3/64, 1/16, 5/64, 3/32 inches |
| Finish Type | Bronze |
| Finish Types | Bronze |
| Included Components | 40 pieces of cobalt drill bits |
| Item Highlight | Fully Ground 5% HSS-CO With 118° Point; 65-67 HRC Superior Heat Resistance; Straight Shank; Cuts Cast Iron, Plastics & Wood |
| Manufacturer | Hymnorq |
| Material | Cobalt Steel |
| Material Type | Cobalt Steel |
| Model | M35 |
| Number of Flutes | 2 |
| Number of Packs | 1 |
| Number of Pieces | 40 |
| Part Number | M35 |
| Point Style | Split Point |
| Set Name | 40pcs inch 4size |
| Shank Type | Straight |
| Surface Recommendation | Stainless Steel |
| Tool Flute Type | Spiral |
| UPC | 681413691339 |
| Unit Count | 1 Count |
R**S
High Quality
High quality-m reasonably priced
M**N
So far so good
Bought this set 2 months ago and have only used ONE bit. It worked well.
M**S
Not cheap Chinese junk
Just inexpensive usable Chinese drill bits. They are within .001" of stated sizes and will cut soft copper and mild steel unlike some of the cheaper bits on Amazon. The only reason I didn't give 5 stars is because I haven't used them long enough or hard enough to make that judgement.
M**E
Awesome
Great product and great price!
A**R
good deal
so far so good , seem to be good drill bits.
C**Y
durability
I'v used the smaller diameter drill bits repeatedly for drilling approx 50 holes sequentially through 23/32 thick plywood, and each bit lasts about 15-20 drill holes before it breaks off (in the wood), probably due to the heat of repeated drilling. Maybe if I slow down the drilling so they cool they will last longer.
G**R
Great value! worked well on 1/4 mild steel. They were all Straight and that’s half the battle
Definitely good value in comparison to most other drill bits available in this size I had no problem drilling about 15 holes in mild steel 1/4 inch thick using a drill press However it did seem as though they lost part of their edge after about 8 or 10 Personally when dealing with drill bits this small I really don’t expect them to last too long simply because I’m always snapping them or loosing them no matter which brand I use
D**S
Above average
I bought these drillbits to replace those that broke in a cobalt bit set. So far they seem to be holding up and do not break as easily as some of the other Chinese junk does
G**B
Great drill set
Very good quality, very fast shipping, fully recommended!
I**B
Can't complain about these.
Very good drill bits for the price, have tried the 3/32 into 90mm PVC Pipe with a pine stiffener inside, like a hot knife into butter, 16 holes in all. Then used that bit into the head of a large hex bolt, started to penetrate OK, had to be careful using it with a battery drill, then tried that bit into 5mm aluminium , ok result. I've purchased cheap drills before and they would hardly mark the aluminium.
A**C
Work well for how much i have used them
Used these occasionally over time Work well
L**T
Wholly hell
Good cheap drill bit suitable for use does not stay sharp for extended use but for the price who cares
R**Y
Drill bits
Some okay
Trustpilot
1 week ago
4 days ago