*313inc's new quad design in durable stainless steel. It houses a standard 3/16 inch R188 bearing that is a pressed fit with our polyurethane ring retention system. The ring sits in a precision groove cut to hold a bearing in place allowing for the changing of the spinner bearing in a simple and clean way. There is no adhesive used as adhesives may damage a bearing itself. We designed our retention system for the convenience of effortless bearing changes while keeping the balance and concentricity of the spinner and bearing itself.
*Stainless steel quad spinner- 5.6 oz (159g)
*This model is not tumbled or bead blasted. Parts are precision machined and as such have machining marks. The buttons are 3D machined.
*Solid copper body with a solid copper Keturi button that has a stainless steel insert.
*Stainless steel standard R188 Hybrid Ceramic - Si3N4 (1/2 inch (13mm) outer bore X 1/4 inch (6mm) inner bore x 3/16 inch (4.7mm) thick. 10 ball precision bearing
*Measuring at approximately 2 inches (51mm) in diameter and .75 inches (19mm) in thickness with the buttons in place.
*Includes an additional polyurethane ring, microfiber cloth and drawstring bag.
*Each spinner is serialized, has the production date and company signature.