Drywall screw, Gypsum screw, Tek screw 1. Fine thread 2. Coarse thread 3. Sharp point 4. Drill point 5. Bugle head 6. Phillips drive 1. Black, 2. Grey 3. Zinc 4. Yellow Zinc 5.Black Zinc finishing Main Products: Self Drilling Screw, Self Tapping Screw, Chipboard Screw, Thread Forming Screw, Drywall Screw, Concrete Screw, Window Frame Screw, Metal Frame Screw, Roofing Screw, Fencing Screw Collated Screw, Computer Screw, Confirmat Screw, Deck Screw , Distance Screw, Hanger Bolt, Eye Screw, Gypsum Board Screw, Sems Screw, Machine Screw And special screw according to drawing and special request. With All head type / Drive Type / Thread point type available. Special packaging are also available upon customer request. Size: #6 to #10 (M3.5 to M4.8), Length: 1/2 to 6 (13 to 150mm)