E-Z Lok Threaded Insert, Brass, Knife Thread, #8-32 Internal Threads, 0.375" Length (Pack of 25) Provides a Strong Machine Thread In Hard Woods Ideal For Use in Woods Like Oak, Cherry, and Maple Designed For Use In Furniture, Cabinetry, Storm Windows and Marine Applications Simply Drill the Appropriately Sized Hole and Install with Screwdriver or Optional Drive Tool Proprietary External Knife Threads Provide Superior Holding Power Superior holding power in hard woods. UNC, UNF, and Metric sizes. Available in brass and stainless steel. Install with bolt/jam nut or optional drive tool.