KINGSO 50PCS Tile Leveling Device Spacer Building Flooring Wall Construction System Tools Clip Material: Plastic; Color and Size: as shown Pattern: Wedge / Clip for tile thickness are between 8~13 mm; suitable for tile gap &gt;1.4mm Package included: 50x Clips How to use: pressing wedge, until two tiles at a level; 24h later, kicking the straps ,or use hammer