Vitrex Wall And Floor Tile Spacers Are Supplied In A Resealable Bag Or Tub For Easy And Convenience Storage. Each Pack Features The Ready Reckoner, A Quick And Simple Way To Calculate The Correct Number Of Spacers Required. The Easy Way To Achieve A More Professional Tiling Finish. For Constant & Even Spacing Of Tiles. Space Wall/Floor Tiles Evenly. Ensures An Even Grout Line Throughout