Hape - Double-Sided Hand DrumTap The Silicon Top Surface For A Classic Drum Sound. Rub The Raised Ridges On The Rim To Create Two Interesting Percussive Effects. When The Dots On The Bottom Wooden Surface Are Struck They Create Two Distinct Tones Double Sided Drum And A Stick Tap The Silicon Top Surface With Your Hands Or The Stick For A Classic Drum Sound. Rub The Raised Ridges On The Rim To Create Two Interesting Percussive Effects. Rub The Raised Ridges On The Rim To Create