The tool makes it quick release the spark plug cap / coil on R, F, G and K series coil. A high quality tool could extend their lifetime. It is designed for following BMW Motorcycles:
R1150 models with 2-spark ignition (2004 and later)
All R1200 models (except R1200 C and CL)
All F800 models plus
F650 GS twin
K1200 S, R, R-Sport, GT
K1300 S, R, GT