VAICOCUT Longer Tmax and more consistent tool life lets you make more everyday. Available in a variety of customizations. Home / Tools / Vaico Cut / Internal Tool Holder Internal Tool Holder Grooving Find your tool and buy Select Shank Material Type? Steel Shank Select Shank Diameter Type? 16 20 25 32 40 50 Select Operation Type ID Grooving Select Hand Type Left Left Right Select Insert Size 2mm 2mm 3mm 4mm 5mm 6mm Select Tmax 5 8 10 12 14 Product list