DGHAOP 10pcs Stainless Steel Small Torsion Spring 50mm 90 Degree Torsional Spring for Tools Maintenance and Carpentry DIY

There are springs that are sold 4 for $15-$20 that are marketed as residential door hinge openers. These work identically for less: Door hinge pins fit through these springs coils. Might wrap them with tape to achieve same scratch proofing as plastic dipped, marketed ones. My heavy door needed springs on all 3 hinges. YMMV

These worked well on light duty tools. However, they aren't powerful enough for heavier tools.

These are nice little springs and I had to install 2 on the hinges to my hollow (not solid) closet door. I don't think they could even move a solid door.I needed better airflow from the closet and I didn't want to remove the door. This is a very lightweight door and I thought 1 spring would be enough but 2 was just perfect, at first. It opened the door about 75% open. However after the door was used for a few months it would only open the door about 5% I suppose I could have added 1 more spring but I opted for a stronger spring design and just 1 of the other springs is very quickly opening that door to 100%. Not ideal but better that 5%I would have given a higher rating if they had performed for more than a few months.

This will work but I wondering if there is another item that is little stronger than this.

Trying to replace a spring in my garbage can and the measurements for this spring seemed possible but ended up being too wide in the coil which was hard to detect before trying them.