GRK FIN HandyPak TRIM Head Finishing Screws, 9 by 3-1/8-Inch, 100-Count #8 trim screws use bit T-10; #9 trim screws use bit T-15 Self-tapping, TRIM head screws; W-Cut thread design One package contains 100 screws Climatek coated for all weather corrosion protection conforms with ICC#2442 TRIM head screw for any fine woodwork or carpentry application