Syrup 3.5x20 (500) Black Skom is a construction grass with high quality, sustainable and extensive areas. This large black-headed conversion with a diameter of 3.5 mm and 20 mm, is ideal for high performance in metal, wood and other hard materials. Provides additional flexibility for submission of 500 units in a package, large and sustainable projects. The SKOM brand production has a high-wearing resistance and is longevity. The large black head of the syring is to ensure that the work is clean and equally locating the surface, it helps to become more tidy and stronger. Thanks to its self-cutting feature, the additional tool can be easily used without the need. It is a perfect choice for those dealing with both professional masters and DIY (unique work) projects.