Usage: just hand the saw kicked back and forth friction on the cutting object， a few seconds to get! Do not use your hands: the thumb into the thumb side of the ring， saw the body stretched it taut， briskly saw the body can move back and forth. One-handed use: Cut a first thumb thickness than the branches around sawing length 10CM， both ends of the branches to make V-notch， the thumb ring into one end of the V-shaped incision， after bending branches， the other thumb ring insert another background a V-shaped mouth， it can become a handsaw bow。(Recommended usage) blade is an important survival backpack items， wire saws sawing very thick tree， and put your backpack is not space， is almost negligible. The wire saw is an important survival backpack items， very fine wire saw jagged， rusty wire saws will be careful to make serrated blunt when used， should be wiped clean after each use， Tu lip food oil. It can cut wood， plastics from any direction. Outdoor survival wire saw is in a very important article， explorers wire saw high strength， light weight， easy to carry.