Material: Made of high quality hard alloy for long time use. Spiral cut teeth provide a positive grip for removing rounded or damaged bolts. Spiral sleeve provides secure connection to rounded attachment for extraction. Specially reinforced sockets with corrosion protection are designed for the removal of damaged bolts, screws and nuts. Ideal for removing sockets, nuts, bolts, screws, etc. Product Description: It comes with a storage case, easy to store. Spiral cut teeth provide a positive grip for removing rounded or damaged bolts. It can be driven with a measuring wrench or socket, can also be used on screw heads and nails. Specifications: Socket: 0.95cm Model: #1 - #10 Type: impact socket Disc size: 0.95cm Measurement system: metric Material: chrome-molybdenum steel Hex head size: 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 17mm, 19mm Hex Head Outer Size: #1 16mm #2 16mm #3 17mm #4 19mm #5 19mm #6 21mm #7 22mm #8 24mm #9 24mm #10 27mm Package contains: 1 x Set of 11 sockets for removing