30 Pcs 15% Silver Brazing Joint Solder Ring Silfos Rings for 1/2" O. D. Copper Tubes Silver Solder Brazing Ring for HVAC Copper Tubes Small Welding Process ACKLLR so it is super easy

so it is super easy to stick on a metal surface and always know where it is

or 5/16 in

Brand: AirStone

Part Number: UN64530HU2563H11ZN93OIA

Named one of TIME’s Best Inventions 2024

30 Pcs 15% Silver Brazing Joint Solder Ring Silfos Rings for 1/2" O. D. Copper Tubes Silver Solder Brazing Ring for HVAC Copper Tubes Small Welding Process ACKLLR so it is super easyMaterial Composition: these quality silver brazing joint solder rings are made of 15% silver, 5% phosphor, and copper; This nice material composition ensures durability, and it is self fluxing on copper, thanks to its phosphor content, for a more robust joint Abundant Quantity: experience quantity and quality with this package that includes 30 pieces of silver brazing joint solder rings; This sufficient quantity caters to all your small welding