These squirrel feet have been dry preserved stiff with all bones still inside. The hands hands themselves are about 1 3/4 inch to 2 1/2 inches long and are dried and preserved stiff. The screw sticks out approximately an additional 5/8 inch with some variation. Squirrel foot wall mounts can be used to hang items such as keys, necklaces, lanyards, charms, etc, and they also just look plain weird and creepy sticking out of a wall all by themselves. Photos are stock photos showing examples of typical paws. Out of country buyers my apologies but due to US export law, we are unable to ship wildlife product out of country.
The details: This foot has a wood screw that sticks out about 5/8th inches from the foot. Since this item is not heavily weight bearing, wood screws can work for all manner of walls, plaster, drywall, etc. along with wood of course.
To install: You will probably want to drill a smaller test hole first and then screw by hand the paw into the test hole. This way the paw screws in without having to put too much pressure on it. So first use a drill or sturdy dremel tool to drill a pilot hole about the same depth as the length of the paw screw but with a smaller diameter than the threads of the paw screw. Remember to make your pilot hole less wide than the screw. Then you can screw the paw into the pilot hole by hand and the threads of the screw will bite into and grab onto the sides of the hole.
If the wall is dense strong material like wood, make the pilot hole diameter almost as large as the threads of the screw. If the wall is crumbly soft material like dry wall, make the pilot hole maybe 2/3rds the diameter of the screw. The goal is to be able to screw on the paw snugly but without having to crank too hard while screwing it in. These feet are fairly sturdy but not as sturdy as wood or metal. If you make the pilot hole too small and then test and see the paw is not screwing in easily, you can always enlarge the hole and try again, so better to start out too small than too large for the pilot hole.