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 chrome vanadium alloy steel, 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.Specifications:Material: Chrome vanadium alloy steelColor: BlackFit 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 / 0.74Case Size: Approx. 17.2 x 7.9 x 3.5cm / 6.77'' x 3.11'' x 1.37''Package Weight: Approx. 368gPackage Included:1 x 10Pcs/Set Nut Remover Kit.Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.