IMPORTANT NOTICE : Holiday Announcement
Please be informed that Prometheus Hobby will be closed for a public holiday from May 23, 2026, to June 1, 2026.
Our online store remains open, and you can continue to place your orders during this time.
All orders received during the holiday period will be processed and shipped in the order they were received, starting on June 1, 2026.
Thank you for your understanding and patience.
The Prometheus Hobby Team
Cabochon Mandrel
The Cabochon Mandrel is made of Stainless Steel and both ends are threaded to accommodate our cabochon shapes and nuts. The mandrel is 6mm dia x 230mm long.