1. The extension rod can be freely rotated and bent, which is convenient for flexible use in narrow places 2. The corner device is bent 105 degrees, easy to use, metal material, sturdy and durable 3. Lengthened connection, safe and firm, easy to operate 4. Material: 45 gauge steel 5. Packing list: corner device x2, drill bit x10, sleeve x9, extension rod x1 6. Size: about 5.9x3cm for the small corner, about 14x3.2cm for the big one, and about 29.5cm for the extension rod 7. Weight: about 490g/set
