https://www.ebay.com/sch/i.html?_nkw=3M+3M+Ab5030+Circle+0+875+250+Emi+Absorber+Black+7+8+Circle+Pk250+G5731945&_sacat=0&_dmd=2

3M 3M Ab5030 Circle-0.875-250 Emi Absorber, Black,7/8' Circle, Pk250 G5731945

Regular price
$228.00
Sale price
$157.00

EMI Absorber, Black, 7/8 In. Circle, PK250, Package Quantity 250, Tapecase product manufactured from 3M material