Suggest 2B nib: Can be used with tempered gla screen protector or without Screen Protector.HB nib: Can be used with paper-like screen protector or without creen protector..3.0 thin nib: Can be used with tempered gla screen protector or paper-like screen protector. For Apple pencil 1st / 2nd generation Replacement Tip 2B SoftHardne is 90-95HB HardHardne is 115-1203.0 ThinHardHardne is 115-120Outer layer is p> Suitable for Apple Pencil 1st / 2nd Generation It can be used directly after installation, just as sensitive as the original pen tip. Sensitive and smooth writing High sensitivity, tilt sensing,the line follows the pencil without delay. 500000 friction tests, Super durable. One nib can be used for a long time, and there is no need to change the nib frequently. Easy to install and remove. Matched threads can be easily installed and removed by rotating. Our 1 nib is equal to 30 ordinary nibs. Top quality, a set of nibs can be used for 4 years. 2B nib Soft Hardne is 90-95Inner layer: ABS material, harder, used to fix the antenna;Outer layer: TPE material, softer and more wear-resistant;RF antenna: precision copper, retractable, for preure sensing. 3.0 Thin nib (Hard) Hardne is 115-120Outer layer: ABS material, harder, used to fix the antenna;Spring: Smart adjustment of preure to protect the refill.RF antenna: Precision alloy, super thin tip, used for fine creation. HB nib (Hard) Hardne is 115-120Inner layer: ABS material, harder, used to fix the antenna;Outer layer: ABS material, more wear-resistant;RF antenna: precision copper, retractable, for preure sensing.