The entire Grinwood decking system has been designed by the use of fixing clips. No need for clamps, vices or plank spacers, the clip reduces the construction time of a deck by at least 30%, compared to a screwed installation.
Only one screw is needed per clip. Grinwood has different clips for you to choose, the T clips, SS304 clips,etc. Also the expansion screw is needed to fix the joist to the ground.