For sale is a Lathe Carbide Insert Tool Holder 570100 DET 101. Shank Dimensions(tapered): 1.25" x 1.2" (thickest part) and 1.25" x 0.65" (thinnest part) Large Eye diameter: 0.5" Medium Eye diameter: 0.28" Small Eye diameter: 0.15" All numbers are approximated.