Al said > https://www.ebay.com/itm/232678490872 > > anyone run across a volume source for these? > > They appear to be IBM's version of the Texsleeve
Interesting there is no mention of p/n 2200574 Rigid Cleaning Tool in the IBM CE Tools Guide for August 1984 http://www.textfiles.com/bitsavers/pdf/ibm/360/fe/S131-0075-3_CE_Tools_Ref_Aug84.pdf This catalog lists some SLT tools so perhaps it post-dates 1984, or may have been deleted?