Both pens were used for about a month. They were only used at home for a planner, so they are almost scratch-free and clean. Operation has been confirmed. They have been lightly cleaned with alcohol wipes. Jetstream jetstream multi-function pen 4&1 Metal Edition [Ink Colors] Black, Red, Blue, Green [Ballpoint Diameter] 0.5mm [Refill] SXR-80-05 [Mechanical Pencil Lead Diameter] 0.5mm [Specifications] Front barrel/cap: Aluminum / Rear barrel: ABS resin + coating / Clip: Copper [Size] Diameter Φ13.7 x 18.5 x 148.8mm Weight 20.6g Lightweight ・Dark Green MSXE5-2000A-05 ・Ice Silver MSXE5-2000A-05 Set of two. Type: Multi-color ballpoint pen Ink: Oil-based Features: Set Body Material: Metal Popular Model: Jetstream Model Number: 4&1 Other Features: Bundle Green, Silver, Khaki, Business, Adult, Simple, Plain, Matte