Metalworkers and machinists, this might be for your toolbox. This is a cutoff tool holder (sometimes called a parting tool holder) with model numbers SMBB2032 and SPB32. Brand new in original packaging from CK brand. Made in China. The '20mm' in the title likely refers to the shank size or cutting width. Cutoff tools are used on lathes to part off finished pieces from the stock, or to cut grooves. If you're doing turning work and need to make clean cuts off your workpieces, a good cutoff tool is essential. This one includes both the holder and the cutter bar/tool bit. CK is a known brand in cutting tools. Whether you're a hobbyist with a small lathe or a professional machinist, having a reliable cutoff tool makes your work safer and more precise. Prevents wastage and gives clean separation. Check your machine's compatibility for tool holder size. Good addition to your metalworking toolkit. Makes parting operations smoother and more controlled. Essential for anyone doing serious lathe work.