About this 3D model

Some clamps to hold the pool cover in place. The frame of the pool is made of 64x44mm elliptic tubing. You'll need a 20mm M3 thread and a 35to50mm M4 bolt with it's nut The hole in the inner part needs to be tapped to M3 or you'll need to drill to 3mm and add M3 nuts on each side.