Those are from aircraft quality billet aluminum construction. I got the grid satin pyramid as they have the highest grip of all.
They even have this friction test for both dry & wet, showing for all pedal types.
Here's the Pedal Grip Test
As a matter of fact, TFS has the entry level pedals from this seller.
For those of you who want to buy the entry level pedals, go with the TFS. Theirs are cheaper.
By the way, my grid gas pedal is left a little smoother (without the pyramid) because you do want your foot to slide on the gas pedal a little easier without the grip.
[This message has been edited by Fiero Vice (edited 07-14-2018).]