Craft from stainless steel with resistance, these badge backs stay for long time use. Perfect for outdoor event and humid , solving the damage problem of traditional metal backs. Each round flat badge back weighs only 1g, reducing wearing fatigue for extended use during meetings or event. Prevents fabric pulling for a seamlessly clothing without discomfort. Effortlessly attach badges in seconds without tool—ideal for event organizers saving preparation time. The simple designs ensures easy setups for efficient event execution. Each pack includes 20 pcs (25mm diameter) of silver/black backs, catering to conferences, exhibitions, and team activities. Eliminates shortages with ample spares for corporate and bulk needs. Flat circular designs firmly holds badges up to 500g, slippage or tilting. Enhances professional display for company logos/pins, boosting brand visibility at social gatherings.