Be sure to watch our Toy Hammock Hanging Instructions video for full instructions on how to hang your toy hammock.
The hole for the wall anchors needs to be slightly smaller than the width of the anchors.
For example, if the widest part of the anchor is 1/4" (5mm) wide then choose a bit size of 3/16" (4mm). This will make it easy to tap in the anchor but also ensure a snug fit into the dry wall.
We don't tell you a specific size drill bit because sometimes the wall anchors can change slightly from our suppliers. What is important is to choose a bit size that is smaller than the anchors but not so small that it's difficult to hammer them in.