About this item 【14-Piece Complete Kit】 Includes 7pcs spiral screw extractor（2*#1, 2*#2, #3, #4, #5）, 7pcs left hand cobalt drill bit(2*1/8", 2*5/32", 3/16", 1/4", 19/64") for common stripped, broken or rusted fastener removal. 【Durable Materials】 Made of impact-resistant Cr-Mo and HSS, it offers exceptional durability, wear resistance, and heat resistance. Its robust construction ensures a long service life, allowing for easy drilling and removal even on hard metal surfaces. 【Wide Compatibility & Versatile Use】 Suitable for removing most common sizes of broken screws, bolts, pipe plugs, and fittings. Ideal for automotive repair, home maintenance and professional mechanical applications. 【Convenient Storage Case】 Comes with a labeled storage case for neat organization and quick access. The tools are simple to use even for DIY enthusiasts, allowing for fast and effective extraction without complex tools or professional experience. 【Simple Use】 With the left-handed bit, drill into the damaged screw, then use the extractor to pull it out smoothly; minimal effort, with no damage to surrounding wood, metal or plastic. Overview Material: Cr-Mo and HSS Brand: YEKEPRO Tool Flute Type: Spiral Surface Recommendation: Metal Set Name: 14-Piece Screw Extractor & Left-Hand Drill Bit Set