These tips fit into their corresponding Pilot Board Master Wytebord Markers.

Board Master Fine Round Tip (1.7mm Tip Size) brown package.
Board Master Medium Round Tip (2.3mm Tip Size) green package
Board Master Fat Round Tip (3.2mm Tip Size) blue package
Board Master Medium Chisel Tip (5.2mm Tip Size) grey package
Board Master Fat Chisel Tip (6.2mm Tip Size) black package