1.For Pencil Has A Detachable Tip, Which Can Be Replaced At Will.It Is Smooth And Sensitive, Flexible And Wear-Resistant, And . 2.Polymer Alloy Pen , More Wear-Resistant, Can Be Used For Postgraduate Entrance Examination Notes, Professional Conversations, Writing To , And Rid Of Your Pen Anxiety 3.Reinforced Pen Tip, Not Easy To Break 4.Detachable Needle, Innovative Polymer Round Spherical Pen Tip, Writing Smoothly Without Damaging The Screen 5.Noise Reduction And Mute, Write Freely Without Disturbing Others Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Dimensions: Approximately 13.7mm Long, Maximum Outer Diameter 4.88mm Colour:As Shown Material,Type: B: Copper,Silver high damping style Package Contents: 1x Replaceable 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.