These blocks are designed to go underneath your original board handle to raise the height.
This makes it easier to do board-offs but also just grabbing and handleing the board during waterstarts is alot easier.
They come in two heights 3 cm or 4,5 cm, or you can order a set.
(the actual heights are 28mm or 43mm)
Included in the package are the necessary long screws with extra spacers if needed.
When you use the spacers make sure to put the spacer on the scres first, so first spacers then the original handle then the block and then into your board.
The material used is PETG, this is a stronger material than the normal 3D printer plastic, and is not affected by UV light or Salt water.