+ Article code: PUTNPART, Acrylic Screw on Back Ring for Specific Acrylic Tunnel × Please select Price0.89 € ? Discounts - 0.11 € 0.98 € Customize it ADD TO BAG Notify me Sorry, but this item is currently sold out. Product Details Get it with diameters from 3 mm up to 50 mm. A classic product at an unbeatable price, straight from your Factory. Size guide FAQ Do you have any further questions or need help? Please check our FAQs or contact us!. Return Policy Still thinking about it? No problem, thanks to our 100% satisfaction guarantee! That's returns for 14 days for unused items in their original packaging - no questions asked! More info here.