TH6SB Small Razertip Calligraphy Chisel Tip - heavy duty.
Small Calligraphy Chisel - Heavy Duty Tip
Square shaped nib designed to burn writing in a calligraphy like manner. Also good for solid colouring in. The 6SB's sharp edge is more bullet-nosed than knife-sharp so it's less likely to dig into the wood when being used.
Works with the Binding-Post Interchangeable-tip Pen.