Fastap Plus DAC450SQ #10 x 4-1/2" Exterior Self Drilling Wood Screws with DuracoatXT - Square Drive Head 50 per Package Fastap Plus For General Exterior Carpentry #10 wire diameter x 4-1/2" Length Premium DuracoatXT coating far outlasts galvanized and Power Point self drilling tip #3 Square drive and flathead with nib design 50 Screws per Package