Westrim Strap Hinge Slip-On Page Protectors, 12-Inch by 12-Inch, 10/Pkg Easy loading, super clear, acid free plastic enhances photo pages Preserve and protect photos from fingerprints, spills, deterioration and discoloration These stainless steel staple hinged protectors feature acid and lignin free, buffered, white cardstock sheet inserts Convenient resealable package protects unused sheets For use with #29015 refill pages, or any 12" X 12" page