Description: This tile flat leveling system is designed for quick and easy installation of tiles. It can effectively reduce call backs by insuring that the finished floor surface is slippage-free. It requires minimal effort to install and remove, very easy to learn and use at any skill level. Features: 1. Made of high quality plastic, sturdy and durable. 2. Very easy to learn and use at any skill level. 3. This tile flat leveling system requires minimal effort to install and remove. 4. Prevents tile from moving during the installation and virtually eliminates slippage. 5. The cap is reusable, which is economical and environmental-friendly. Specifications: Condition: 100% Brand New Material: PP For tile thickness are between 3~24mm Suitable for tile gap: 2mm For Cap : Color: Red, Yellow(Optional) Size: approx. 4 x 3.8cm / 1.6" x 1.5" For Base: Color: White Size: approx. 6 x 3cm / 2.4" x 1.2" Style: "+", "-"(Optional) Package Weight: Cap 1190g, Base 280g Package Included: 100pcs Caps / 100pcs Straps How to use: 1. Put the base into the tile bottom. 2. Put the cap on base, then screw the cap. 3. Press down tile till two tiles at one level. 4. Wait for 24 hours, kicking the caps, or use hammer. Note: Please allow 1-2mm error due to manual measurement. Thanks for your understanding. .