Features The specially hardened sockets with corrosion protection are designed for the removal of damaged bolts, and nuts The innovative spiral profile digs itself into the head of a damaged screw or nut, allowing it to be easily loosened Spiral cut teeth provide positive grip, remove circular or damaged bolts This nut bolt extractor socket set is made of superior 40CR material, high hardness and durable in use It also includes a bar to help extract the damaged fastener from the socket Descriptions:This nut bolt extractor socket set is made of superior 40CR material, specially hardened sockets with corrosion protection are designed for the removal of damaged bolts, and nuts. It also includes a bar to help extract the damaged fastener from the socket. With this tool set, you will have smooth experience in your repairing process Specifications:Material: 40 CR(extractor socket), #45 steel(bar)Model: # 1 - # 10 Explosion-proof: yes Insulation: yes Magnetic: no Size range: 9-19mmBar length:10cm/3.94inch Bar diameter: 6mm/0.24inchWeight: 369g Remover NO.  Fits hex size Outside hex size Package Included:10 x nut bolt extractor socket1 x bar1 x case Package List