Bass Drum O's 4" Black Bass Drum Port Rings 2nd D String first introduced in 1978

first introduced in 1978

in which each overdubbed track is exported separately

so you can balance them out or emphasize their natural qualities

Windscreen to prevent pop noise effectively

from rock and metal to electronic music

Bass Drum O's 4" Black Bass Drum Port Rings 2nd D String first introduced in 1978Replicating the original bass drum hole reinforcement, these have a snap on design. The O's allow for minimal head removal with more variety in tunable ventilation as well as external microphone access. 4" Round Black finish Protects your port from rips, snags, and tears Adhesive rings used to hold the Bass Drum O's in place Alcohol swab included for a clean, permanent application