Dorma 8600 Series Door Closer.
Adjustable Size 1-6, Round Arm Non-Hold Open Arm, Tri-Pack, Full Cover, Sex Nuts and Machine Adjustable Size 1-6, Round Arm Non-Hold Open Arm, Tri-Pack, Full Cover, Sex Nuts and Machine Screws, 1-3/4, 695 Dark Duranodic Bronze.