The tile level system is great to remove the tile slippage and crest perfectly leveled surface for both floor tile and wall tile. It includes clips (A), wedges (B) and pliers (C). They are used with tile between 3/16 in. and 7/16 in. thick. The clips (A) can provide 1/16 in. grout line. The system is very easy to use. Just slide two clips (A) under the tile approx. 2 in. from each end of the tile. And then slide a wedge (B) into each clip. Tighten with pliers (C) until tiles are snug against bottom of the wedge. Move tiles so that slides are aligned and tiles are pushed tightly against clip (A). Let mortar dry and use the pliers (C) or kick side of clips (A) to nap them off. Wedges (B) and pliers (C) can be reusable. All are sold separately.