We purchase our knobs and caps from Selco Products. At some point I’d be happy to include them in a spare parts section of our website. For now if you need a replacement just e-mail sales@lzxindustries.net and be patient with us on timing. Can send you an invoice as soon as we’re able if you need some knobs or caps. If you need a lot, just contact Selco. Here is a list of partnumbers from our system.
