Using the wedges correctly avoids severe damage to the flooring when it expands due to changes in humidity. The advantages of the iTOOLS floor wedges are: - Easily adjustable from 8-15 mm - Maintain its setting - Makes the laying of the initial boards much easier - Can be used for all types of floor boards - Easy to detach the floor wedge using the uniquely designed strap - Can easily be unlocked and can quickly be re-used again and again The EZ floor wedge is a perfect help for professional installers.