One Barrel Band with .275" sight block (.560" hole spacing). Barrel band is for .75" dia barrel ( I used it once and remember it being a little tight but it did work ). Unit appears to have a Parkerized type finish. This is used. It looks like new comparable items are selling for $50. - $80. I am selling this for $27.00 including USPS Priority Insured postage to the US.