The 9x12" is recommended for use as one of the 1/2 size plates used for 22 Caliber rifle Steel Stages. This plate replaces the 18 x 24" rectangle center hole target used in Steel Challenge stages. 

We use a water bath precision plasma cutter to cut all of our metal targets. This handgun target mounting hole is designed for a modified 1/2 inch plow bolt.

One mounting option for this target plate is an adapter that bolts to the target and is placed over an angle iron stem.

We also have an transportable A-frame with a pendulum, that disassembles without tools.

Other target product information can be found on the 'Handgun Target - Homepage'