Schunk SINO Universal Toolholders
https://www.techspex.com/knowledgecenter/schunk-usa/tooling/sin

https://schunk.com/in_en/clamping-technology/series/sino-r/

https://news.thomasnet.com/fullstory/toolholding-system-offers-alternative-to-collet-styles-459034

https://www.sme.org/technologies/articles/2004/tooling-and-workholding/

10/12/2006
Toolholder Change to SINO-T Helps HMC Realize Full Machining Potential
An alternate toolholding technology has allowed a shop to achieve much higher spindle speeds on an HMC used to machine short runs of aluminum billet workpieces.
https://www.mmsonline.com/articles/toolholder-change-helps-hmc-realize-full-machining-potential