AMS2488 Type II is an SAE coating used as a dry lubricant. Its applications include military and medical instruments around the world as an anti-galling agent. The surface is incredibly slick - comparable to the feel of Teflon.
More information on this standardized finish can be purchased at the SAE standards website.
The Silvia is the latest titanium yoyo with many new changes - mainly the shape. With the success of the Daytona, the design language was carried over to create a classic - modern design in a full organic shape.
The Silvia comes in two variants - 50mm and 54mm as dictated by the names. They both weigh very similar with the biggest difference being the diameter. This was done to see how different diameters effect the performance and feel of a yoyo, as well as to offer a choice for customers - either a fun zippy pocket throw, or a wider more competition oriented design. Both offer different experiences for different disciplines - the choice is yours.
More information regarding the design of the yoyo can be found in the "Blog" section of the website. Each yoyo will have a signed and numbered certificate.