【Premium Material】Our particle board screws are made of high quality color zinc, sturdy and durable for daily use. They are premium quality self tapping screws with solid construction andexquisite craftsmanship, can keep the shine with metallic luster for a long time without surface modification treatment. 【Smooth Edge】Our wood screws are designed with good surface finish, which has smooth edges without roughness, no welding marks. The flat head screw plate features superior craftsmanship, which prevents the sharp and rough edge fromhurt your hands when using them. 【Easy to Use】Ribbed self-countersinking head for a flush finish. Industry standard cross recessed head. Hardened steel for high torque loads. Good fastening performance when installed on studswood, wood on wood, ceiling, etc., do not slide easily during installation. 【Widely Used】The surface of coarse thread drywall screws is smooth, clear thread and no burr. These hard drywall screws with sharp point can easily pierce