120-2
RSC, ROLLER CHAIN, 120-2, 1-1/2" PITCH, 2-STRAND, 10 FT LONG
National Supply Company equipment is common on construction sites everywhere.
ANSI 120-2 COTTER PIN TYPE CONNECTING LINK 1 1/2” PITCH 1” WIDTH
I like that the TEAC Corporation Tascam X-48 uses standard SATA drives internally.