This is a T15 Series Soldering Iron Tip, ‘B’ conical shape R0.2 x 7.5mm, this tip shape is an all-round type which can be used from any direction and it is available for any kind of soldering. Therefore it is not only accessible for the soldering beginners but also suitable for the experienced. Please note this is suitable for use with the Hakko FM-2027 and FM-2028 Soldering Irons