Mainly used outdoors and can withstand increases in temperature and direct sunlight (i.e. improved UV degradation resistance)Used in conjunction with overhead cranes, hoists or winchesPolyester slings are available in single or double ply to protect heavy, irregular sized loads from scratching or marringSlings must be checked frequentlyShould any surface area show signs of wear or cutting, the sling must be replaced immediatelyEach is tagged with manufacturer's name and capacityTwisted Eye Sling Type 4: Reverse eyes make full functional contact with lifting hooks without the use of hardware. Widely used for both choker and basket hitches