1. For Making New Threads Or Reworking Damaged Or Jammed Threads.2. It Is Made Of High-Speed Steel With Titanium Plating, Which Greatly Improves The Cutting Performance Of The Drill Bit, Is More Wear-Resistant And Prolongs The Service Life. It Ensures Sharp, Fast Execution While Maintaining Strength And Efficiency.3. All Cutting Teeth Are Precision Cnc Machined And Precisely Heat Treated For Thread Performance.Size: 35x25x18MMTap Model: Bc1.37*24TWeight: 185.1g (1 Pair)type: AColour:yellowMaterial:Titanium-plated high-speed steelPackage Contents:1 pair of tap repair partsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.