Lyndex-Nikken CAT40-SK13-90U- Collet Chucks; Collet System: Slim Chuck ; Collet Series: SK13 ; Taper Size: CAT40 ; Projection (Decimal Inch): 3.5400in ; Minimum Collet Capacity (Decimal Inch): 0.1080in ; Maximum Collet Capacity (Decimal Inch): 0.5120