Features: Crafted from high strength steel with a corrosion resistant coating, ensuring durability and long lasting use. This bolt extractor set includes sockets in the most commonly needed sizes,all clearly marked on each socket：13mm,9/16"(14mm),5/8"(16mm),17mm,11/16"(17.5mm),3/4"(19mm),1/4"(6.35mm),5/16"(8mm),3/8"(9.5mm),10mm,7/16"(11mm),12mm,1/2"(12.7mm),and hex adapter 1/4” To 3/8". It will easily extracts damaged bolts,nut,and screws even if they are stripped,rusted,or frozens. The lug and nut disassembly tool with reverse spirals designs can be bitten downwards to provide clamping force. The more it rotates, the tighter the socket is clamped. The special internal thread designs are engineered to easily extracts damaged bolts,lug nut and screws in home appliance,vehicle repair and industrial instrument. Specifications: Material:S2 Steel Packing Case Size:Approx.170mm/6.69''x97mm/3.81''x43mm/1.69'' Package Includes: 14Pcs Screw Extractor note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.