Yamaha DTXpress/DTXplorer/DTXtreme

Anyone know where to order SilenTrim rim silencers from pintech?
I can't find anyone that carries them, but they are supposed to 
be "available" accessories for the pintech 10" edrums...


HEre is all I could find on it... It automatically comes with the 
more expensive silentech drums...

SilenTrim
This black rubber rim silencer is now available as an accessory to 
help reduce audible rim shot noise on professional 10" pads! Easily 
replaceable if worn!

ST-A SilenTrim MSRP $8.00 USd ea.



I tried searching on the part number and still nothing came up...