This Glass Build Plate is a factory replacement from Ultimaker that fits perfectly on your Ultimaker S5, S3 or 2+ Connect. This safety glass is break resistant, but in the event it does break it creates small pieces that are easy to clean up rather than large, dangerous shards. This is a perfect replacement part to have on hand for all Ultimaker owners, but it can also be used to swap out in between prints for maximum uptime and productivity!