We love the Bass Drum O's series. These are the easiest to fit and most secure fitting portal on the market. These portals have the snap on back piece which ensures the portal won't fly off in the middle of your gig.

Simple, Easy to use and a great solution to venting and porting your resonant bass drum head. Bass Drum O’s make it easy for mic placement whilst also preventing splitting. They look great as well and come in a range of colours and sizes. this ring sits around the hole you put in your drum and protects the edging from taking any microphone damage on stage and in the studio.

Here’s what Drum O’s say about their Drum O’s range When it comes to venting and porting, Drum Os gives you plenty of options. Its easy to get creative with Drum Os because there are endless design possibilities. Drum O’s now come in 2, 4 & 6-inch diameters! Also each size is available in lots of colour choices.