QEP's Leave-in, Hard-Style Tile Spacers offer a faster and easier way to space and align marble, granite, porcelain and large format tile. They produce a 1/8 in. (3 mm) grout joint and have extra-long prongs to assure perfect 90° grout corners. They can be used as traditional vertical tombstone-style spacers or with inset leave-in installation method. Easy to handle and easy to position, they do not have to be removed before grouting, saving time and effort. Contractor pack comes in resealable jar with 1,000 spacers.