In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. Quickly becomming the most popular mount of professionals. Use the Shure A50D to mount a microphone onto a drum. A screw on the mount secures the microphone, and an adaptive brass washer (european insert) is available to accommodate an even wider range of microphone models. The flexible, yet sturdy, rubber construction provides stability and ease of installation.