0.25" diameter carbide tipped jobber length drill 118Β° standard point. 2 3/4" length of flute. 4" overall length. Letter Size E. Tool Diameter Tolerance: +0"/-.0007". Used by machinists and hobbyists for general purpose drilling of most materials.
I bought this bit to drill holes in the shank of a knife and it made 3 holes before the carbide tip broke completely. If you don't max it out you'll probably be fine, but if you need to drill through hardened metal, look elsewhere.
Avoid overheating. The carbide holds, but the solder melts and the tip flies into another dimension. Highly recommended for mild steel. When it comes to hardened steel, don't skimp like me, just go for the expensive 100% carbide bits.
I used this to drill holes in a Damascus steel knife blank which is quite hard in some places but can be drilled with a regular drill bit and is incredibly hard in others areas and ruined my titanium coated bits. If you are not a pro but just an amateur like me then this bit may seem expensive but having used it I would say it is well worth the money.