sbc, cork-lam 5/16" thick w/steel core
bbc, fel-coprene rubber 5/32" thick
sbc, molded rubber 1/4" thick w/steel core
sbc, composite 3/32" thick w/stell core, brodix-12
sbf 289/351W, molded rubber .200" thick w/stell core
sbc, cork lam 1/4" thick
SBC, Rubber with steel core, 3/16 " thick, sold in pairs