drill set. Silver and deming was a company in ohio back in the 1800's manufactured this type of drill used in agricultural machines. Large size drill bits over 1/2" on a reduced 1/2" shank. This set is the best you can buy. http://www.drillbitwarehouse.com/ stocks this set. These drill bits have a 135 degree split point. The size drill bits are "9/16" drill bit", "5/8" drill bit", "11/16" drill bit", "3/4" drill bit", "13/16" drill bit", "7/8" drill bit", "15/16 drill bit", "1 drill bit" High quality 135 degree split point on tri flat reduced 1/2" shanks. Set comes complete with aircraft aluminum machined foam lined case. drill bit warehouse is the place to purchase the highest quality drill bits for less! Call them at 1-800-350-TOOL (8665)Drillbit warehouse.com also has individual bits in all sizes up to a "1-1/2" drill bit" on a 1/2" shank. Remember it is not what we pay for a drill bit, it is what we get out of it! Currently there is 44 sets left.
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