Drywall screws         Drywall screws fine thread; drywall screws coarse thread; drywall screws self-drilling point   Specification: Diameter: 3.5mm (#6); 3.9mm (#7); 4.2 mm (#8); 4.8mm (#10) Length: from 16mm to 152mm Coating: back phosphated, grey phosphated, zinc, yellow zinc, decromet                        Chipboard screws         Chipboard screws countersunk pozi drive, chipboard screws countersunk torx drive, chipboard screws double countersunk pozi drive, chipboard screws pan head pozi Specification: Diameter: 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5 .0mm, 6.0mm Length: From 10mm to 220mm Coating: Zinc, Yellow Zinc v