Adamjee Bugle Head Drywall Screips:High-Quality Steel With Zinc Or Galvanized Coatingcoarse Thread For Easy Screwing Into Drywallsharp Point For Easy Penetration Into Drywallbugle Head: Allows For Countersinking Into Drywall For A Flush Finish.Coarse Thread: Enables Easy Screwing Into Drywall Without Splitting.Sharp Point: Facilitates Easy Penetration Into Drywall.Durable Coating: Resists Corrosion And Wear.