T Nuts M10 50Pcs Threaded Inserts T-Nuts, Zinc-Plated Steel 4 Pronged Tee Nut for Wood, Rock Climbing Holds Cabinetry

Just what I needed to install casters in heavy display shelving units. Used these fantastic casters: GBL 2" Heavy Duty Caster Wheels... https://www.amazon.com/dp/B07SVP7FQN?ref=ppx_pop_mob_ap_share

Excelen

They look good and haven't had any fail so far. They look .. normal. Which is a good thing.

Perfect for the climbing wall!

Used these to add anchor points to my kiddos rock wall that goes to the second bunk bed.

These are good for creating a female screw location within wood. They're easy to install - just line them up and hammer them in. However, the tines are shorter than I expected, and the grip that the insert has on the wood is affected. If you're using this for furniture legs or something with a safety related load involved, you may want to double up on the glue and limit the height of your legs or they may come out eventually when you least expect it.

Works awesome for my kids climbing wall

Used these on a custom playroom install for a client. Gave them the option to change up the grips as children grew older/taller.