Seco 10218131 Milling Tip Insert Holders & Shanks; Projection (Inch): 1-620/949 ; Projection (mm): 42.000 ; Projection (Decimal Inch): 1.6535 ; Overall Length (Inch): 8-1/2 ; Overall Length (Decimal Inch): 8.5000 ; Neck Diameter (Decimal Inch): 0.000