Optic fiber heat shrink tube for Ftth & fttx boxes 
OD after shrinking =2.5 /2.7/3.0mm
Length=60/40 mm
Inner diameter =1.5/1.7/1.8 mm
Made up of EVA or PE material, stainless steel 
Used for optic fiber fusion splicing 
No influence on transmission performance 
Easy installation 
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