ScrewA screw is a rod or tube with a helical groove on its surface. Its main use is as a fastener (fastener) to hold two objects together, and as a simple plane to convert torque into a linear force. Bolts can also be defined as an incline that encloses a stem. Product Specification Roofing Screw Nails We sell Roofing Screw Nails with the LAS brand and are available in various sizes. Each size, per box has a different price. We sell a variety of building materials and carpentry equipment to support the activities of your porters or artisans in completing a building construction project. We also sell a variety of other cheapest and most comprehensive building materials in Surabaya only at the Cheap Building Material ShopPlease contact us at:WA / CALL: 085333008793Price Roofing Screw: CALL