This pack of 600 assorted yellow zinc plated double countersunk wood screws are constructed from durable steel. Whether you need an 80x (3 x 16mm), 80x (3 x 25mm), 80x (3.5 x 20mm), 70x (3.5 x 30mm), 50x (3.5 x 50mm), 40x (4 x 20mm), 50x (4 x 30mm), 50x (4 x 40mm), 40x (4 x 50mm), 20x (5 x 50mm), 20x (5 x 60mm) or 20x (5 x 70mm) screw you will be prepared for the job. Recommended for use on plasterboards. This pack is ideal for a range of DIY projects.