Marketing pens, notepads, stickers, and waterbottles.......no thanks, ill gladly take an echo, vascular or general probe keychain though. phase = echo linear = vascular curvilinear = general These keychains are fully 3d printed and stands just under 2.5 inches in height. They come with a metal wire barrel twisted key chain thats 4inches in length. Custom orders, please message the name that will be printed on the probe. 10 characters maximum. For bulk orders, other options and to learn more about us, please visit: www.version2vr.com we also have practice probes and ultrasound probe badge reels available on etsy.