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 steel Color: Black 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 Case Size: Approx. 17.2 x 7.9 x 3.5cm / 6.77'' x 3.11'' x 1.37'' Package Weight: Approx. 368g Package Included: 1 x 10Pcs/Set Nut Remover Kit Features Versatile 10-piece set: Remove nuts, bolts, screw heads, studs, and more with this sturdy tool kit. Wide range of sizes: Fits heads sized 9, 10, 11, 12, 13, 14, 15, 16, 17, and 19mm for maximum compatibility. Reliable grip: Spiral cut teeth provide a secure grip to remove rounded or damaged bolts. Durable construction: Made of hard chrome vanadium alloy steel for strong strength and long-lasting durability. Fast and efficient: Drive these tools with a metric spanner or socket for quick and efficient work.