Lyndex-Nikken CAT50-SK6-195U- Collet Chucks; Collet System: Slim Chuck ; Collet Series: SK6 ; Taper Size: CAT50 ; Projection (Decimal Inch): 7.6800in ; Minimum Collet Capacity (Decimal Inch): 0.0280in ; Maximum Collet Capacity (Decimal Inch): 0.2500i