Original Milwaukee 44-70-0375 PLUNGER KIT

This part is compatible with many tools including the models listed below:

Milwaukee 2441-20 (E34A) Cordless Caulking and Grease Guns

Milwaukee 2641-20 (D15A) M18 Cordless 10oz. Caulk and Adhesive Gun Bare Tool Cordless Caulking and Grease Guns

Milwaukee 2641-21CT (D15A) Cordless Caulking and Grease Guns

Milwaukee 2642-21CT (D15A) Cordless Caulking and Grease Guns

Milwaukee 2643-21CT (D15A) Cordless Caulking and Grease Guns

This isn't an aftermarket part or a replica but an original product manufactured by Milwaukee