Double-layer Magnetic window cleaner

Features: Suitable thickness: : 3-8mm/8-15mm/15-26mm/20-30mm     How to choose the correct size? Single-layer glass choose blue style (3-8mm), blue style (3-8mm) is also suitable for cleaning fish tanks and car glass. Choose red style for double glazing (8-15mm) Choose green style for double layer thicken glass(15-26mm) Three-layer glass choose brown style (20-30mm) Please be sure to choose the correct size!