Stainless Steel 316 Round Ring Welded 1/4" x 1" (6mm x 25mm) Marine Grade - US Stainless
Stainless Steel 316 D Ring 5/32" x 1" (4mm x 25mm) Marine Grade - US Stainless
Amazon.com: Swpeet 60Pcs Bronze 1 Inch / 25mm Heavy Duty Multi-Purpose Metal O Ring Metal Rings for Hardware Bags Ring Hand DIY Accessories Keychains Belts and Dog Leas
Amazon.com: Swpeet 150Pcs 1 Inch / 25mm Gun-Black Heavy Dut Multi-Purpose Metal D Ring Semi-Circular D Ring for Keychains Belts Hardware Bags Ring Hand DIY (Gun-Black, Metal D Rings)
M27.5 Retaining Ring Pair for 25mm Diameter Optics | Edmund Optics
Pool hook stainless steel - Bottle shape - 25mm, Waist ring - Stainless steel - 25mm | METALTIS
25mm Ext. Retaining Ring (5 pieces): Amazon.com: Industrial & Scientific
Thirty 25mm to 28.5mm Adapter Ring For GW style bases Warhammer & 40k | eBay