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
Ring Mandrel Set of 8pcs
These mandrels are specifically designed for making glass rings, big hole beads and napkin holders. They are made of stainless steel and can stand very high temperatures. In this set, there are 8 different sized mandrels. The lenght of the ring tube is 3,5centimeters, the leght of the mandrels is 29,5 centimeters.
Set Ring Sizes (Diameters of the rings);
1 pcs. 21.00mm
1 pcs. 20.00mm
1 pcs. 19.00mm
1 pcs. 18.00mm
1 pcs. 17.00mm
1 pcs. 16.50mm
1 pcs. 16.00mm
1 pcs. 15.00mm
