Cello tips are made with Nickel Silver the best alloy in the ball pen industry as well as high-grade stainless steel. All tips have a very high 99.8% machineability and are precision-crafted to within a super sharp 0.1677mm. All thanks to high-precision Swiss machine MIKRON which is especially made to our requirements of quality and consistency.
We use only the latest technologies from Japan and premium raw materials for our Gel ink. The Gel ink is filled by our super-sophisticated automatic filling machines with sensing devices of quality control, with inbuilt Feather Flo technology for a light-handed, pressure-free writing experience. We use the latest Polymers and the finest moulding machine for zero-defect injection moulding at a mass scale. Our sophisticated production processes ensure Cello's high quality standards are met every time, without compromise, especially given the very large volumes of pens we produce every day.
All ball pen tips are manufactured in-house, with the technology to perform excellently even under extreme weather conditions. The tips, coupled with all-weather rubberized inks that have special additives that prevent it from groping and have a shelf life of at least two years, ensure that Cello pens perform flawlessly on demand.
At Cello, quality control is a rigorous, exhaustive 24x7 process to ensure the rejection rate is kept highly laudable at 0.1% only. Every Cello pen passes a series of rigorous quality tests to qualify as a Cello. The tip is repeatedly bounced millions of time against a hard metal surface, as well as being dropped from varying heights to prove its durability. The perfect tip for us is one that lasts 2500 meters for ballpoint pens and 600 metres for gel pens. The ball is rolled 1.4 million times to prove its longevity, with deviation in writing a mere 1.3% from start to end. All Cello inks are tropicalised to withstand temperatures ranging from sub-zero to 50 degree celsius and write 2500 meters to prove it will keep the Cello promise.
- Gel Pens
- Metal Pens
- Markers Hi-Lighters
- Signature Series
- Exam Series
- Fountain Pens
- Gift Set