Lyndex-Nikken CAT40-SK16-60UP Collet Chucks; Collet System: Slim Chuck ; Collet Series: SK16 ; Taper Size: CAT40 ; Projection (Decimal Inch): 2.3600in ; Minimum Collet Capacity (Decimal Inch): 0.1080in ; Maximum Collet Capacity (Decimal Inch): 0.6300