ROCO™ Wood to Metal (Steel) Screws are specifically designed for increased holding power and an incredibly clean finish. When engaging the wood, the screw effortlessly drills through the wood while the wings mill an oversize hole. When the screw engages the steel base, the oversize hole prevents the threads from engaging the wood, lifting wood and steel apart (jacking). The specially engineered drill point cuts fast through the steel base and once penetrated, the wings easily break off. The Self-Tapping Threads then tap through the steel and firmly clamp the wood and steel together. The patented Turbine Ribs™ ¹ ensure an incredibly clean finish. Its cup shaped countersinking head, provides unparalleled holding power and less risk of splitting the wood. The Horizon Curve Head has been architecturally engineered to leave an elegant finish.

^{(1) Patent # 11,346,388 B2}