Promark Glenn Kotche Active Wave 570 Drum Sticks The innovative Wave Handle design provides a comfortable, contoured grip that can also be used as alternative sound source Active Grip is heat activated and gets tackier as player perspires and body temperature rises Acorn tip and long taper provides articulation and fast rebound Hickory is the most popular wood choice for drumsticks due to its resilience, responsiveness, durability, and classic feel Diameter: .570" Length: 16 3/4"