Recommendation for carpet spikes for Dynaudio Stand 20 speaker stands


I have the Dyn stands for my Buchardt speakers, but lost the supplied carpet spikes. Can anyone help me out with replacements for them?  I have posed the question to Dynaudio a couple of times but have gotten no response. Any alternative modestly-priced means of coupling these heavily-weighted stands, filled with lead/sand, would be appreciated.  I have Iso-Acoustics GAIA footers under my main speakers, Spatial Audio M5 Triode Master, but prefer a less expensive alternative for the Buchardt's. Thank you.     
whitestix
As a last resort, you can find a bolt with a thread that fits, and then take it to Lowes/Home Depot.  They have a device (chart with trial threaded holes) that lets you determine thread size, by trial and error.  Being Dynaudio, it will likely be in metric.
Thanks. I kicked the question to Dynaudio for their factory replacement spikes.  There is a rather limited depth of the screw holes in the stands and aftermarket spikes might be a PIA.  
MC,
I got the Nobspings and put them under my Sachs' tube amp a bit ago, in place of my foam core corregated rubber pads.  I am apt say that the bass seems a bit more emphatic and the sound somewhat more vivid.  Great tweak, I think, but I could not imagine put these under speakers, certainly not my Spatials on carpet.  

BTW, Dyn got back to me with a price of $64 for the replacement spikes.  Once I figure out the thread size on the stands, I will look elsewhere.  I actually realize that I have Stand 6's, nor the 20's.