Practical aesthetics F40 heavy-handed brass ball-point pen polygonal turn-out core

**Unlimited series** **Infinite Series** "The cut is fine, the loss is very little" The entire pen barrel is gradually divided from polygons and approaches to circles Just like the process of deducing pi, an infinite non-repeating decimal Constantly dividing, infinitely approaching the answer Every digit shows a variable unknown 4 sides, 8 sides, 12 sides, 16 sides Through the continuous refinement of the surface, the Visual light and shadow changes and different tactile experiences **F40**is a pen that expresses the design concept more purely in the infinite series From square to circle A tribute to the great mathematicians of ancient times The sixteen-sided edge at the grip makes the grip more delicate and comfortable The four-edged barrel at the upper end prevents rolling Top turn out core The pen with a sense of design combines practicality and beauty The pen body is made of PC plastic with high strength and anti-aging With refined vintage Bronze fittings Let the charm of the pen increase over time So as to generate its own writing temperature **product information** Model: Infinite Series F40 Material: PC plastic barrel (painted) / Bronze inner barrel and accessories Specifications: 152mm x 11mm / 24g Refill: Japanese mikuni ink (0.5mm / black neutral ink) **color** Glacier Ash smoky ash Charcoal Ash **Environmentally friendly packaging** Grey board made of recycled waste paper as packaging Presented in the most minimalist way Exquisite workmanship and rich textured materials simple and restrained **use and maintenance** 1/ The cuboid at the end of the pen rotates out the core, and the pen tip rotates counterclockwise to change the core 2/The color of Bronze will change due to different usage time and storage environment So as to generate its own writing temperature The oxide on the surface is wiped with Bronze paste Can restore the natural luster of Bronze https://img.alicdn.com/imgextra/i2/111860724/O1CN01siHGHi1HDdVbPQRWJ_!!111860724.jpg https://img.alicdn.com/imgextra/i1/111860724/O1CN0118MBEy1HDdVn53FSP_!!111860724.jpg https://img.alicdn.com/imgextra/i4/111860724/O1CN0173rKyy1HDdVeaBNAa_!!111860724.jpg https://img.alicdn.com/imgextra/i1/111860724/O1CN011NyFY51HDdVeaBNAg_!!111860724.jpg https://img.alicdn.com/imgextra/i2/111860724/O1CN01LgovdN1HDdVr23Wac_!!111860724.jpg https://img.alicdn.com/imgextra/i4/111860724/O1CN01vVZZbf1HDdVeTZRoA_!!111860724.jpg https://img.alicdn.com/imgextra/i2/111860724/O1CN01aYlePB1HDdVgnD2Vc_!!111860724.jpg https://img.alicdn.com/imgextra/i3/111860724/O1CN015ZwwOg1HDdVnvwA8g_!!111860724.jpg https://img.alicdn.com/imgextra/i3/111860724/O1CN01WoRMon1HDdVUxFiTc_!!111860724.jpg https://img.alicdn.com/imgextra/i3/111860724/O1CN01D6kRk41HDdVl7HqX0_!!111860724.jpg https://img.alicdn.com/imgextra/i3/111860724/O1CN01pJUBvh1HDdVlskDKN_!!111860724.jpg https://img.alicdn.com/imgextra/i4/111860724/O1CN01v5XTWc1HDdVZpSBdL_!!111860724.jpg