X2 on the Bianchi T6500 cobra, size #2. I did modify it just a tad, this holster comes with a thumb break and a long button snap strap thats is placed over the holster. The long strap is a permanent fixture and gets in the way on certin drills.
So I used a needle and thread with a strip of velcro and attach it to the strap at the lower button snap strap and now I can fold the strap back over the top of the holster, secure it to the velcro already there and leaves me a thumb break only for tactical times and a more secure holster at other times.
I really like this holster. Its very adjustable for different sizes of lights and other models of pistols. Universal and double belt attachment for quick or secure release. Even comes with a built in cleaning rod.