Our part # TEC-83868-3/8 These collets conform to DIN 6388 specifications and are made from highcarbon bearing steel that is heat-treated for improved flexibility and longer life. Each collet is precisely ground and honed using a Swiss technique, then individually inspected and tested for quality. Runout (T.I.R.) .0004" Collapse range: 1/64"

Techniks 3/8" SYOZ25 Collet