10pcs/box Damaged nut Tool do screw removal Tool set do threading high Description: It is a set of 10 pieces of sturdy tools that will help remove nuts, bolts, screw heads, studs, etc. Fits do heads of sizes 9, 10, 11, 12, 13, 14, 15, 16, 17 and 19 mm. The spiral incision provides a secure grip when removing rounded or damaged screws. Made of hard alloy, they have high strength and long durability. These tools can be driven with a metric wrench or cap for fast operation. All these tools are packaged in a suitcase for easy storage and transport. Specification: Material: stal carbon Black color Fit head size: 9mm/0.35'', 10mm/0.39'', 11mm/0.43'', 12mm/0.47, 13mm/0.51'', 14mm/0.55'', 15mm/0.59'', 16mm/0.63'', 17mm / 0,67'', 19mm / 0,74 Housing size: ok. 17,2 x 7,9 x 3,5 cm / 6,77 inch x 3,11 inch x 1,37 inch The package includes: 10pcs/set do nut removal