Fangrui Product Details Features: 1. High Sensitivity - The Pen Tip Provides You With An Accurate Writing/drawing Experience With Excellent Responsiveness And Sensitivity. Drawing Is Smooth And Responsive Without Any Lag. 2. - This Fine Rubber Tip Glides Well, Smooth And Scratch-free, Which Greatly Reduces The Friction On The Screen. 3. Easy To Install - No Tools Required, Just Two Fingers To And Remove The Tip Easily. 4. Blue Is A Soft Nib, Writing Elastically And Softly 5. Red Is A Hard Nib, Writing Thick And Smooth Description: Applicable Models: M-pencil Size: Length Approximately 2.5cm Material: Rubber+metal Colour: As Shown Package Contents: 2 X Blue Stylus Nib 2 X Red Stylus Nib Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.