Concave Wedge is an item in Scrap Mechanic.
A 1 block large concave wedge originally designed for the Farmer Car that by default has a green tint that cannot be made with the Paint Tool. Given that the concave wedge is less buoyant and heavier than the Staircase Wedge dispite having a smaller volume, it is probably made of a denser material.
The collision hitbox does not exactly match up with the visual shape, because Scrap Mechanic's physics engine does not support concave shapes. Instead, a smaller straight wedge is used to approximate the concave curve. The hitbox does not cover the tips, and sticks out a lot in the middle of the curve.
- Added Concave Wedge.