🔧 Cut smarter, not harder — the pro’s choice for flawless holes every time!
The Unibor M2 Annular Cutter Mag Drill Bit combines high-speed steel durability with a unique cutter geometry to deliver fast, precise drilling in mild steel, brass, aluminum, and plastic. Featuring a 9/16" diameter and 1" cutting depth with a secure 3/4" 3-flat shank, it’s engineered for professional-grade performance and versatility across a wide range of materials and projects.
| Material | High Speed Steel |
| Cutting Diameter | 0.56 Inches |
| Finish Type | Brass |
| Shank Type | 3-Flat |
| Cutting Angle String | 90 Degrees |
| Brand | Unibor |
| Tool Flute Type | Straight |
| Minimum Bore Diameter | 0.75 Inches |
| Surface Recommendation | Aluminum,Steel,Brass |
| Number of Flutes | 2 |
| Unit Count | 1.0 Count |
| Manufacturer | Unibor |
| Part Number | 24118 |
| Item Weight | 3.48 ounces |
| Package Dimensions | 4.21 x 1.18 x 1.14 inches |
| Country of Origin | China |
| Item model number | 24118 |
| Size | 9/16-Inch |
| Color | 9/16" |
| Finish | Brass |
| Item Package Quantity | 1 |
| Measurement System | Imperial |
| Included Components | Cutter |
C**.
I will never use hole saws again.
I will never use hole saws again. Oh man, in a good drill press or mag drill these things are a life saver. Hole saws dont last but these do. I drilled 8 holes in half inch plate steel with this and it took it like a champ and can still cut more. Dont forget to use some cutting oil to prolong the life also dont forget the pilot pin.
T**.
Works as advertised
We used this to do our fixture table. Unfortunately I didn’t think far enough in advance to get the 2” cut depth. It works as intended & holds tolerance.
M**B
Four Stars
Cuts good and has given decent life for the price
Z**N
Worked awesome
This bit worked fantastic. Had no problem cutting out the 14 holes in 3/4" steel plate.
M**.
No pilot pin!!!
Item not as described. No pin. We couldn't use it and held up the job. If people want to sell industrial supplies on Amazon. they should realize how a little that we depend on accurately described products. MSC might be expensive but they get it right.
M**D
Good low cost annular bits
Using these at a fabricating company that I own. No issues so far. Works great and lasts with proper coolant application. We double check dimensions prior to cutting with them. Sizing is spot on.
K**S
Very sharp, good quality
Chucked it in a 3/4" standard collet and it spun with no runout. Machines fishmouths in 1"x.035" tubing perfectly. Also used to machine lightening holes in a case hardened sprocket, and it worked great. No loss in cut quality after 20 holes
C**G
Worked great.
Works great, drilled 70 holes in 1/4” steel, drill bit steal like brand new.
