All Faber Castell Lead Refills are authentic. You must choose the lead size that fits your mechanical pencil. For example a 1.4mm pencil will ONLY take 1.4mm leads.
1.4 suits Faber Castell E-motion Clutch Pencils
If you are unsure of you size please contact our staff. Brands are interchangeable as long as the correct millimetre sizing applies.
The letters indicate the composition of the lead and will give a darker or lighter look and a softer or harder feel.