Check the listing for details. Rifle/Pistol Safe/Empty Chamber Safety Flagsl Range - ORANGE/YELLOW. Condition: New. Listed at 12.85 USD. You are buying one package of quantity 4 Chamber Safe Flags in Orange or Yellow. Chamber Flags are used to visually show that a Weapon is SAFE from a glance. Also known as Open Bolt Indicator (OBI) or Empty Chamber Indicator (ECI), the brightly colored flag obstructs the firing chamber and alerts the range officer and other shooters that the fire arm chamber is empty! These items will work in most (.22 caliber - 12 gauge) pistols and rifles. The shaft is 4" for the Large Bore and 2" for the Small Bore/Rimfire. Please order the rimfire for your .22 or .17HMR Shipment via USPS First Class mail service. Feedback From Buyer Date/time Item as described, quick shipping. Recommended.a************k( 75) 2019-05-03 15:14:45 Fast shipping, thanks!m*********8( 637) 2019-02-02 14:48:52