Specifications: Material: Alloy Color: Black Fit Head Size: 9mm / 0.35inch, 10mm / 0.39inch, 11mm / 0.43inch, 12mm / 0.47inch, 13mm / 0.51inch, 14mm / 0.55inch, 15mm / 0.59inch,16mm / 0.63inch, 17mm / 0.67inch, 19mm / 0.74inch Features: This is a set of 10 pieces sturdy tools to help remove nuts, bolts, screw heads, studs, etc. It fits heads sized 9, 10, 11, 12, 13, 14, 15, 16, 17 and 19mm. Spiral cut teeth provide a positive grip to remove rounded or damaged bolts. Made of hard alloy, they are of strong strength and long durability. These tools can be driven with a metric spanner or socket for fast work. All these tools are packed in a case for easy storage and transportation.Package included: 1 x 10Pcs/Set Nut Remover Kit Notes: Please check as much as possible to make sure the item is the one that you need. Please allow 1-3cm deviation due to manual measurement. Due to light and screen difference, the item's color may be slightly different from the pictures.