These are made to mount on a vertical surface and hold 4 QCTP toolholders. They are the A2Z cnc style and should fit the Chinese knockoff of these toolposts. Dovetail measures .960 and .780. I integrated some holes for chuck bar storage too. $12.50 each + $3 shipping on total order. Paypal is geauxfrc@gmail.com please make sure to include shipping address. Colors vary so if there is a color that you want or absolutely do not want please put it in the notes and I will try my best to accommodate - Thanks