DW (Drum Workshop) HardCore Adjustable Bass Drum Beater
The DW HardCore beater can help you achieve the desired amount of attack by easily adjusting the level of contact the core
has with the drum head. When playing soft, the beater acts much like a felt beater, but when struck hard, it has all the attack of a hard plastic or wood drum beater ball.
Image is for illustrative purposes only.