The Set-Rite Spacer Kit includes all four individual spacers: 1/8 In., 1/4 In., 1/2 In., and 3/4 In. These Set-Rite Spacers will work for any new installation or repair on an existing toilet flange. If remodeling or installing a new floor (such as ceramic tile, marble, granite or wood), and flange is below the finished floor level, use spacers with any Set-Rite Toilet Flange Extension Kit. The four individual spacers can be stacked to any height or can be snapped in half to support an existing closet flange.