Dia. of cut: 1-1/4'', Cutting Depth: 1''. Cuts holes in steel accurately, quickly & safely. Large holes can be drilled up to ten times faster than regular drills bits. Make overlapping holes, slotting holes and edge cuts. With 3/4'' Weldon Shank. Hole of Pilot Pin=Dia.1/4''.
Cuts quickly and accurately. I made a few overlapping holes and the tool didn't move at all. I put it into a 3/4" collet as received and it worked great. Good value for money.
This has worked great in my Bridgeport factory for cutting 3" holes in 1/2" cold rolled sheet metal . Saves a lot of time compared to using a drill tool. The tool is sharp and cuts fairly quickly with coolant. I have sold these core drills and bought a whole family of large sizes and use them on my mill and lathe.
Pros
Drills large holes 10 times faster than regular drill bits
It took me a bit to cut ten 2" diameter holes in 1/4" steel for a project. I knew it was cheap and wouldn't take long , but I thought it could cut at least 10 holes. ZERO! Yes, that's right: ZERO! This drill could not cut steel at all. I applied enough force to the chisel to almost stop my magnetic drill and everything this chisel could do was scratch the surface. I used a lot of cutting paste and tried again and again to no avail. DO NOT BUY: A COMPLETE FRAUD! FURIOUS replacement came next day
Pros
With 3/4 inch Weldon shank. Guide pin hole = 1/4" diameter