https://www.ebay.com/sch/i.html?_nkw=3M+3M+Ab5020+Circle+0+938+250+Emi+Absorber+Black+0+938+Circle+Pk250+G5732627&_sacat=0&_dmd=2

3M 3M Ab5020 Circle-0.938-250 Emi Absorber, Black,0.938' Circle, Pk250 G5732627

Regular price
$213.00
Sale price
$146.00

EMI Absorber, Black, 0.938 In. Circle, PK250, Package Quantity 250, Tapecase product manufactured from 3M material