Features:
1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;
2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.
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: BQLZR
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