TOP Kogyo Hex Socket 4mm, 12.7mm Drive HB-404

• Quickly tightens and loosens hex socket head bolts (cap screws) [Caution] • Use the size that matches the bolt • Insert the socket firmly into the hex recess • Use one that matches the drive size of the socket • When removing rusted bolts and nuts, more torque than the sockets and handles can handle may be required. If it does not come off easily, stop the work