Square Deal Recordings & Supplies (30) 12" Record Divider Cards - LESSER CUT - Black, 30mil - 12" x 13 1/8 - #12NS13BK30 Reusable - Simply flip over or turn upside down! Easy to label with a permanent marker or affixing a label. You can even turn them upside down & reuse! 30mil Thick 12" x 13-1/8" They're durable, and feature rounded corners to prevent jabbing yourself!