5 pack Plastic Hook Backing for Patches 4x2 inch 5 Pack Hook and Loop Backing 4x2 Inch For Patches measures 5 pack 4x2 inch. MANUFACTURED By Ivamis Trading. will attach to loop backing material (not included in package) 5 pieces in pack. Can be cut down with scissors hook backing will not attach to hook backing. You must attach them to loop backings. This package does not include any loop backings for your clothes. Only Hook backing for your patches. Strong Peel and Stick Glue. For turning a plastic backing patch into a hook backing patch. Will not stick onto cloth. You must use them on plastic backing patches. For longer durability, sew on the backing around the perimeter after sticking it on.