**Specifications:**
**Brand:** KACO
**Product Name:** FIRST
**Colors:** White, Black
**Pen Tip:** 0.5mm Black
**Material:** Acrylic-Butadiene-Styrene Plastic
**Quantity:** 1 pen/box
**Compliance Standards:** GB/T 37853-2019, GB21027-2020
**Dimensions:** 145mm x 13.6mm x 13.6mm
**Additional Information:**
Features original heartwarming design with a rotating core mechanism.
Dual-ball pen tip for smooth writing experience, with a low writing angle of 48°.
High-capacity quick-drying ink, allowing for approximately 600 meters of writing length.
Low center of gravity design with metal weight at the front end for enhanced writing stability.
Comes in a heartwarming gift box, perfect for expressing love and romance.
**Ink Refill Specifications:**
**Product Name:**
**Color:** Black
**Tip Size:** 0.5mm
**Quantity:** 2 refills/box
**Compliance Standards:** GB/T37853-2019, GB21027-2020
**Dimensions:** 100mm x 5.7mm
**Note:** Specifications provided are based on data from Shanghai Wenci Experimental Laboratory.
