Features: Serviceable and reliable: Sufficient quantity and classic material can make the standard pen nibs serviceable and reliable to meet your various writing and painting needs. Saving time: When you find the pen tip is worn, you just need to use an auxiliary tool just like small tweezers to fetch the worn one and replace it with ours, saving your time and energy. Compatible with: wacom CTL-471, CTL-671, CTL-472, CTL-672, CTL/CTH-480, CTL/CTH-680, CTL/CTH-490, CTL/CTH-690, CTL-4100, CTL-4100WL, CTL-6100, CTL-6100WL, PTH-451, PTH-651, PTH-851, DTK-1301, DTH-1300, DTK-2200, DTK/DTH-2700 Specifications: Type: standard Color: black Size: approx. 2.7 cm/ 1.06 inches Package includes: 20 x Standard pen nibs Note: Manual measurement, please allow slight errors on size. Small and pointed parts included, please keep away from children. Please take a careful check your pen model before buying. All the brands we mentioned just show product adaptability, not worked as trade mark use, our trademark is TOODOO, kindly noted.Easy to install: standard pen nibs are easy to install and only take 2 steps, you just need to use a small plier to get a replacement nib, and then insert into the hole, easy to operate, nice performance, will serve you for a long time. Rich quantity: the package includes 20 pieces of standard replacement digital pen nibs, which will ensure you work smoothly; The rich quantity can meet your daily needs, and its simple use is convenient for you to replace yourself. Nice accuracy: our refill digital pen nib can keep your pen in nice precision, suitable for many pen models, which will give you a smooth writing or painting experience without worrying about worn problem. Fine standard tip: this kind of standard fine tip is sensitive and flexible for you to use, providing you with a comfortable writing and painting experience, bringing more accurate information and giving you an original feeling just like writing on paper. Product compatibility: these replacement digital pen nibs are designed for many digital models, and compatible with wacom Bamboo Intuos pens, like CTL-471, CTL-671, CTL-472, CTL-672, CTL/CTH-480, CTL/CTH-680, CTL/CTH-490, CTL/CTH-690,TCTL-4100, CTL-4100WL, CTL-6100,TL-6100WL, PTH-451, PTH-651, PTH-851, DTK-1301, DTH-1300, DTK-2200, DTK/DTH-2700; Please take a careful check your pen model before buying.