Enables the straightening of warped blades and optimal clamping without deforming the blade. Assists in laying wooden boards on the terrace. The locking mechanism of the blade holder allows both hands to be free for securing the blade. Application: A tool for laying boards ranging from 80 to 210 mm on terraces. Features: Ability to use this tool in pairs, supplied with 3 reversible wedges for a spacing of 5 or 7 mm between the blades, fixed indexing for blades with a width of 80 to 210 mm, orange epoxy paint.