The RG-KM RECIPROCATOR BLADE is sold separately from the RG-KM Reciprocator attachment.
The RG-KM Reciprocator attachment is part of the STIHL KombiSystem, and can be connected quickly and without tools to the powerful STIHL KM 111 R or the following KombiEngines:
KM 131 R
KMA 130 R
KMA 135 R
You can also use the STIHL RG-KM Reciprocator attachment with the KM 94 R KombiEngine, which is no longer available.