This pack of 1200 assorted yellow zinc plated double countersunk wood screws are constructed from durable steel. Whether you need an 150x (3.5 x 16mm), 130x (3.5 x 20mm), 220x (3.5 x 25mm), 350x (4 x 30mm), 120x (4 x 40mm), 80x (4 x 50mm), 65x (5 x 50mm), 55x (5 x 60mm), 30x (5 x 80mm) screw or 2x driver bits you will be prepared for the job. Recommended for use on plasterboards. This pack is ideal for a range of DIY projects.