The GrooveTech GTDMT1 Drum Multi-Tool kits you out with a drum key, a small ruler and various screwdrivers as well as hex keys, both imperial and metric.
The unique aspect of GrooveTech's GTDKY1 T-Handle Drum Key is of course the sliding "T" handle that allows you to replace drum heads quickly and easily without using any power tools.
Don't just say drum spanner to GrooveTech's GTDKMT1 4-in-1 Drum Multi-Tool. After all, this piece of kit is multifunctional even though it looks incredibly compact.