This Motorbase Stabilizer is not based on an original Micro-Seiki Product. It is entirely based on the RS- 8050 Micro Seiki made for the RY-5500 Motor unit. We named it the RS-1550. I decided to make this Motorbase Stabilizer because I find the standard 4 little feet not very handy. IMPORTANT: The RS-1550 can only be used with the standard Micro Seiki RS-1500 motorbase With this RS-1550 you can: • Adjust the height of the Motorbase very easy, • Place the Motor unit easily in a horizontal position and • You get a more sturdy foundation. The package includes: • 1 base plate, • 4 screws for fixing this upgrade to the Motor unit. • 4 Stainless Steel feet. • 1 Instruction Manual.