Gamo Air Gun Cleaning Set 3-Piece Rod .177 cal Clam Pack. All components are expressly designed to eliminate the possibility of damage to the relatively shallow rifling of airguns. Specifications for Gamo Air Gun Cleaning Rod Set: Manufacturer: Gamo Condition: New Color: Multi Size: One Size Projectile Caliber: .177 Caliber Caliber: .177 Pellet Package Contents: Gamo Air Gun Cleaning Set Gamo 621240954CP: Air Gun Cleaning Set 3-Piece Rod .177 cal Clam Pack