Hello everyone, we at Boha is still open and y’all are doing well! We just got these gimbals in. Their is two different sizes and is all aluminum, just this color only. The two sizes are as follows;Small gimbal 28.2 mm id, 101.6 mm long, and 50.2 rod recesses. Long gimbal 30.5 mm id , 91.2 mm long, and 49.1 mm rod recesses. Pm us, if you want more then one gimbal.