STI 2011 Magazine base plates

STI Magazine base pad for 2011 pistol. Made by Brownells. Double stack width, CNC anodized aluminum, Black. 
12 pads available.  Brand new in package, just removed for pics. Asking $15 each plus shipping. 
Staccato is previously know as Strayer-Tripp International (STI) these pads were made prior to the name change in 2020 if that makes a difference for your pistol.