Whether you re a drummer or a soundperson you ve known the panic of a creeping bass drum. And like it or not your audience has sensed it too. the gibraltar sc-4402 has two ways to keep this from ever happening again. Steel spurs bore into carpeted surfaces like your drum mat to keep your bass drum from sliding forward. And for wood and concrete just flip the spurs over to engage the rubber feet. The gibraltar bass drum anchor mounts to your outside bass drum hoop by way of two wing nut screws so no tools are required for installation and removal a feature sweetwater knows that drummers everywhere will appreciate.