Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Crystal Foil Backs by PERRIN Sale $0.61 | / SKU 6T-4-400 1.1mm - $0.61 1.25mm - $0.61 1.5mm - $0.61 1.75mm - $0.61 2mm - $0.61 2.25mm - $0.72 2.5mm - $0.72 3mm - $0.72 3.75mm - $0.83 4mm - $0.83 4.5mm - $0.83 5.25mm - $1.00 1.1mm 1.25mm 1.5mm 1.75mm 2mm 2.25mm 2.5mm 3mm 3.75mm 4mm 4.5mm 5.25mm Size Chevron down icon 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available Crystal Foil Backs are available in a variety of sizes ranging from 1.1mm to 5.25mm.