new outdoor heater lens heater for ld2039a telescope and camera lenses up to 4.9 inches

new outdoor heated lens heater for od telescope and camera lenses, less than 4.9 inches features: safe use and short circuit prevention. siloxane insulation prevents internal short circuits. designed for the 'astronomical telescope' and dslr camera objectives: to protect optical equipment from water mist or gel. the integrated aluminum film guides a uniform heating surface without angular deflection. 50 mm width design does not hinder development. compatible with the outer diameter of the