Rycote InVision INV-9

Suitable for mics of up to 30mm in diameter, such as the Shure SM57 and SM58, and Neumann's KMS105. Virtually indestructible. Offers much improved isolation from camera noise compared to other on-camera microphone mounts. No elasticated parts — never sags or needs rethreading

Price: 63.60 from Wex Photo Video