C12 C16 C18 C20 B10 B12 B16 B18 Straight shank drill chuck connection rod milling machine drill chuck quick change connect rod
https://www.vogueparade.com/shopping/EN/100007188/7/1005003043860215/c12-c16-c18-c20-b10-b12-b16-b18-straight-shank-drill-chuck-connection-rod-milling-machine-drill-chuck-quick-change-connect-rod//