{TAIL ~ The primary objective} of {HEAD ~ the present invention} is to provide a new and improved drill of the same general type as that disclosed in Shallenberger, U.S. Pat No 5,092,718, but having a length which is substantially greater than its diameter to enable the drill to produce relatively deep bores as compared to their diameters 
{ TAIL ~ The primary objective } of { HEAD ~ the present invention } is to provide a new and improved drill of the same general type as that disclosed in Shallenberger , U.S. Pat No 5,092,718 , but having a length which is substantially greater than its diameter to enable the drill to produce relatively deep bores as compared to their diameters
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