Lyndex-Nikken NCAT50-SK10C-10 Collet Chucks; Collet System: Slim Chuck ; Collet Series: SK10 ; Taper Size: NCAT50 ; Projection (Decimal Inch): 4.1300in ; Minimum Collet Capacity (Decimal Inch): 0.0350in ; Maximum Collet Capacity (Decimal Inch): 0.394