Speedicut twist drills and combined drills and countersinks. 

 - Sheffield:   Firth Brown Tools ltd,   [1963].  
 - 175 p. :  ill. ;  19 cm. 
 - Speedicut tools .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drills (planting machinery)
<br/><br/><label>Dewey Class. No.: </label>621.952