Upgraded Fine Pen Tips: design control replacement tips ,increase the metal tips length, good for tilt drawing and sketch, high strength cover material,improved the weld procedure to make it not easy to broke by falling. Wear-Resistance :The copper conductor with the reliable anti-scratch ball,'t scratch your screen protector ,durable and long lasting ,worry free to easy wearing of the other pencil tips .cost saving. Make for your is a Ballpoint Pen,ink pen but it is also a stylus pens . Control: 1mm diameter , control for the fine detail, unique finer pen tips with the high pressure sensitive as the original pencil tips ,simulate the tungsten carbide ball antenna design,more to the pen like pencils ,no ,free to write ,tilt to draw ,flexible and for writing comfort.perfect fits for the students ,office note-taking,illustrators and especially fits for the artists for digital drawings. Universal Fits: Reliable for , with Pro 1st Gen, Pencil 2nd Generation, Crayon digital pens, Pro 11 inch 10.5 inch 12.9 inch 9.7 inch,good companion with Models Pencil Tips. Satisfied : Easy Installation,Few seconds,twists on or twists off,Quality insured Colour: White Material: Plastic Package Contents: 2 x Pencil Tips Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.