size:
        inch: 1/16",5/64",3/32",7/64",1/8",9/64",5/32",11/64",3/16",13/64",7/32",
                 15/64",1/4",17/64", 5/16",11/32",25/64"
    
    or  metric size : 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10mm

drill can be:
                    fully ground,half ground,roll fored
drill color:
                   bright,black,coffee,rain bow,titanium coated,double color
drill material:
                   M35,M2,W9,W4,F4
drill point angle: 
                    118,130,135,multifork
drill shank: straight shank,nonslip shank