The Universal Shock Mount from ProAm USA is a dual-stage shock mount for microphones. It can be used to securely support any microphone with a diameter of 0.38" to 1.75". This shock mount fits standard microphone stands with a 5/8" thread.
Shure discontinued their shock mount for the KSM313, and finding one that fits it has been unnecessarily difficult. I'm very happy with this shock mount. I can open the spring clamp to easily rotate the mic and use the backside voice. You do have to disassemble all the bands, pop the mic in, and then put everything back together. The shock mount also comes with two spare bands (the small ones, not the main hairband types) and a brass adapter. Awesome build quality for the price.
With this shock mount, I can literally *pound* on my desk and absolutely no resonance gets through the arm into the mic. I'm using this for my Audio-Technica ATR 2100 (the old mini USB model, not the newer X model with USB type C) which is about 28 mm in diameter, and the bands across the front and back hold it very nicely even though the actual sleeve is made for a 52 mm microphone. The isolation is PHENOMENAL. My super cheap mic arm is attached to my desk and used to send a resonating gong type sound into the mic any time something impacted the desk (a drink, my hand, etc.) and I hated subjecting my stream audience to that. That's no longer a worry!