High Quality The screw remover is made of hard alloy with strong strength, which provides reliable performance and long service time Removal FastThese tools can be driven with a metric spanner or socket for fast work, spiral cut teeth provide a positive grip to remove rounded or damaged bolts Multi Size The screw remover fits heads sized 9, 10, 11, 12, 13, 14, 15, 16, 17 and 19mm, which can satisfy your different use requirements Widely UseThis is a set of 10 pieces sturdy tools to help remove nuts, bolts, screw heads, studs and more Specifications: Material: Alloy 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 Included: 1 x 10Pcs/Set Nut Remover Kit