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This is the bit you want to use to install any of my weldless kits.
- For the best value and max hole size versatility, you can get both bit sizes at a combined discount. This gives you flexibity from 1/8" all the way to 1-3/8" in 1/16" increments. Despite the picture, the LARGE bit actually starts at 13/16". The smaller bit would get you to 13/16 or 7/8" and then you would change over to the large bit to go larger than that.
Please note, these bits are not the highest quality units you can buy (such as Greenlee, Klein, or Irwin). However, those high end units also sell for over $40 each. The bits I offer are a great value for someone looking to make less than 10 holes or so. If you keep them cool (let the work and bit cool down after every two steps or keep dipping in oil or water for cooling) and run them slowly, you'll get those 10 holes drilled before the bit is toast. If you want a longer lasting bit, go for the $50 bits. IMPORTANT!! If you spin the bit over and over without seeing a ribbon of metal being cut, you're work hardening the metal you're trying to drill and also dulling the bit. See more info on drilling in the instructions area.
It is highly recommended that you start ANY size hole with a smaller pilot bit approximately 1/8". Step bits are not very good at starting a hole in virgin metal.
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Wears quickly 
Made installing the whirlpool a breeze 
Proceed with Caution