Tri-Squircle

What 3D object will fit through holes that are triangular, square and circular? The TRI-SQUIRCLE!
I designed this out of a 4 inch tall cylinder with a 4 inch diameter and then used an isosceles triangle to cut off the sides.
What 3D object will fit through holes that are triangular, square and circular? The TRI-SQUIRCLE!
I designed this out of a 4 inch tall cylinder with a 4 inch diameter and then used an isosceles triangle to cut off the sides.