VATER polyball beater. This model offers a sound that combines the advantages of felt, plastic, and wood. Specifications: ■ Bass drum pedal beater ■ Polyball ■ Shaft diameter: Approximately 6.3mm * Although the item has been opened once, it is unused. * The top of the bag is slightly torn (see image 2), but there are no issues with the product itself. * Returns due to size differences or incompatibility are not accepted. Thank you for your understanding.