Choate Tool Remington 1100 Combat Bolt Handle 1100/118712 Gauge. They are made of heat treated steel treated to a hardness of 54 Rockwell. The combat bolt handle allows you to quickly manipulate the bolt of your semi-auto shotgun regardless of firing position. No gunsmith required. Simply pull out your old bolt handle and push in the new one. Specifications for Choate Tool Remington 1100 Combat Bolt Handle 1100/1187: Manufacturer: Choate Tool Gun Make: Remington Color: Black Additional Features: 12 Gauge Country of Origin: USA Features of: Made from heat treated steel Blackened finish No gunsmithing required Package Contents: Choate Tool Remington 1100 Combat Bolt Handle 1100/1187 Choate Tool CMT-01-10-02: Remington 1100 Combat Bolt Handle 1100/118712 Gauge