I hope you get a chance to try it out. I want to see how well it actually works. The only information I could find on it was on turf magazines website:
"Stihl Offers New Attachment for KombiSystem
The Stihl KBD-KM bed redefiner is the newest attachment for the STIHL KombiSystem, which offers 14 multitask tool attachments, all powered by a STIHL KombiMotor (KM).
The KBD-KM features a professional "open" guard design to minimize clogging, easily adjustable depth wheel to control the cut, and cost-effective cutting geometry blade.
The unit features a "line of sight" indicator for precise control, solid drive shaft for increased torque and durability, deflector with a thermoplastic elastomer inlay for wear resistance, and skid plate to help protect gearbox"
Recommended for professional use with the STIHL KM 130 R, but can also be used with the KM 90 R and KM 110 R KombiMotors.