Can be turned either 2 Bump, 3 bump or 4 bump. No 2 blanks are alike. Diamond Painting Pen, Length 5 inches without tips. Comes with Velvet Pouch & your choice of 2nd tip. Handmade on Lathe. This is the actual blank that will be turned. Once turned the outside of the blank will change depending on how you want it turned. The tips are interchangeable. For some reason the single tip is always tight. The other tips are sometimes loose. Depends on where they come from. I wrap a piece of scotch tape around the insert. When needed. Diamond Painting Pen, Purple, Black, Slate Gray, Transparent Green, See Thru, Swirl, Stylus Handturned, Alumilite