Gibraltar Bass Drum Port Hole Protector Size:5 Inch Two 7 mil plies

Two 7 mil plies

resulting in stable tuning

Use with the black side out when you need to protect your drums and obscure it from the crowd’s view

medium weight Resonant bass drumhead features a “vented” acoustic muffling ring tucked into the hoop on the underneath side of the head

Aquarian's most versatile 2-ply head

Gibraltar Bass Drum Port Hole Protector Size:5 Inch Two 7 mil pliesIf you want to add a port hole or two to your kick drumhead, Gibraltar Port Holes are the way to go. Of course they look cool if you play rock or metal, Port Holes are guaranteed to boost your drumming cred. But they also protect your port from damage and cover up frayed, uneven, and unsightly cutouts.