Features:
1.Each item is qualify checked with a unique Manufacturing Part Number label on the inner package;in order to confirm if it is authentic item sold by our store.
2.Any question,please contact and send us the MPN label information.
3.Made of 402 stainless steel with sufficient wear resistance.
4.9 different sizes(2 inches 3 inches 4 inches 5 inches 6 inches 7 inches 8 inches 9 inches 10 inches) of openings can be made to suit your needs.
5.Effectively improve the sound quality and ensure that the drum head at the opening is not damaged.

Specifications:
Material: Plastic & Stainless Steel
Color: Black & Silver
Brand name: Yibuy
Size: 139x17x12mm/5.47x0.67x0.47inch (LxWxH)
9 sizes of openings: 2 inches 3 inches 4 inches 5 inches 6 inches 7 inches 8 inches 9 inches 10 inches
Weight: 35g

Package include:
1 x Bass Drum Head Port Hole Punch Tool