[120PCS 10 Colors]: Painting pen grippers about 1.47"/37.5mm long, 0.49"/12.5mm in diameter, 0.31"/8mm inner diameter, 10 colors, 12pcs/color, 120pcs. [Comfortable Grip]: Ergonomic design makes it comfortable to hold in hand, not easy to deform from the pen. [Quality Material]: Writing drill pen grippers are made of premium soft foam cushion, light weight and environmentally friendly, can absorb sweat and help reducing muscle strain after long time writing. [Easy to Use]: Drill pen holder is not easy to fall off from the pen or out of shape, ergonomic design helps to relax your hands after long time writing. [Wide Application]: Writing drill pen grippers fit on most pens, pencils and crayons, and office useand other writing and drawing tools, good for school and office use, helps to relax your hands, comfortable to hold for long periods of time without ache.