Tensioner using ambient temperature ~+100 ℃-40 ℃, polypropylene ratchet strap when using the ambient temperature ~+80 ℃-40 ℃, non-use in high temperature environments. Tensioner when under prolonged exposure to UV radiation intensity drops, in strong ultraviolet radiation so the tensioner should not place excessive usage. Puller to avoid molten metal, acid, glass, fragile items, nuclear reactors, as well as special environments. Requirements using the ratchet strap tensioner work around at least ratchet ratchet axis 9/4 turn.