1. for air conditioning and refrigeration system 2. Strong adhesive 3. Heat retardant 4. Good tear stability Bellsafe aluminium foil tape ... :Width: 48mm, 50mm(2"), 60mm, 63mm(2.5"), 72mm, 75mm (3"), 96mm, 100mm (4") Length: 27m(30yards), 30m(100feet), 45m (50yards), 50m ...