Grips for ball pen are become hit more than 10 years. These are also made of silicone. EPDM was used for the Golf grips. Welcome to develop tooling. The tooling for Golf grips is high as logo needed a EDM and time consumption.
Ball pen grips are made form siicone for ball pen to make it soft for the pen in order to prevent from being fatigued in long time writing. There are more than 100 tooling for this product for different customer.