Carlson's Choke Tubes Universal Choke Tube Wrench. This Wrench made by Carlson's Choke Tubes will remove any Choke Tube with a slotted end. A key chain has been added to the Universal Choke Wrench by Carlson's to allow you to keep this wrench with you at all times. Made of heat treated stainless steel this Carlson's Shooting Accessory will not bend. Specifications for Carlson's Universal Choke Tube Wrench: Manufacturer: Carlson's Choke Tubes Fabric/Material: Stainless Steel Country of Origin: USA Features of Carlson's Universal Shotgun Choke Wrench: Steel has been heat treated for durability Included Keychain for travel Removes slotted end choke tubes Package Contents: Carlson's Universal Choke Tube Wrench Carlson's Choke Tubes Universal Choke Tube Wrench 06605