Item Type: Drum Stick Control Clip Specification: Material: ABS + silicone Usage: Drum sticks 1Made of high quality ABS and organic silicone materials, environmentally friendly and durable 2Smooth and soft surface can prevent your hands from cramps, calluses or blisters even if you play drums for a long time 3The non-slip design allows the drummer to rotate the drumstick without falling 4Equipped with a ring and a thumb fixed position to supervise the beginner's gestures therefore they can develop good habits from the beginning 5The drumsticks used for fancy rotation help to control the playing of the hands2 x Drum Stick Control ClipPlease allow 1-2mm error due to manual measurement. Thanks for your understanding.