- Special design of IRWIN® tip; - The head occupies 80% of the workload; - 53 ° perforation head and single slot design; - With two cutting angles; - Chromium-vanadium steel body; - Finish with double shot blasting.
-Helical tip from the end of the thread, allowing a better displacement in the wood during screwing and increasing the final adhesion. -Threading thread 40º and optimized pitch for a smooth but fast penetration. -25º tip, which allows easy centring and drilling even in harder woods.