metal button badge material:tin size:2.5,3,4,4.5 ... color printing design high quality,with different pin back metal button badge,pin badge1. material:tin/plastic2. size:20mm, 25mm, 30mm ... 70mm,140mm3. full color printing design4. with different pin back in metal or plastic5. packing by opp bag or customized required ... box packing6. low quantity acceptable, high quality, fast delivery metal button badge