JOBBER BIT VS MECHANIC LENGTH BIT. WHATS RIGHT FOR YOU!
A jobber drill bit has a long length compared to its diameter. Jobber bits have roughly a flute length (Twisted Section) 10 times the diameter. For example a .25 in bit will have a flute length of 2.5 inches. Jobber bits are best suited for softer materials.
A mechanics length drill bit is a bit with a shorter flute length and shorter overall length than a standard jobber bit. Having a shorter bit makes it considerably stronger and less prone to breakage, making it a better choice for harder materials.