... :3.5mm 3.OEM welcome. Casino chip,Metal chip,Chip Item name:Casino chip,Metal chip,Chip1.Material:ABS,PS or Clay,insert ... ,printing setup, design dept., production, QC, package, we can fastly finish your customized samples EXACTLY as what you expect ... to us to run their OEM proects. So you can too.Still Hard Looking for a good vendor now ... ! to have our professional reply within 12hours ! Casino chip