The Zebra DelGuard range of mechanical pencils has been around for a while, but hasn’t been mentioned on this blog before, so it’s time to put an end to that. The DelGuard system is a very effective anti-“lead breakage” invention. Sure, you can still break the lead if you advance it out a stupidly long way, but for all reasonable intents and purposes, leads in a DelGuard mechanical pencil are
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