【Important】 The ballpoint pen refill size is 0.7, but the black ink has been replaced with a 0.5 refill. It can be used without any problems. Please consider this before purchasing. I purchased this pen and used it a few times, but the wooden grip didn't suit me, and I haven't used it recently, so I'm putting it up for sale. It's in very good condition, but please understand that it is a used item. I have a cat. I take great care to prevent cat hair from sticking to the item, but please refrain from purchasing if you have allergies or are concerned. ---------【From Product Information】--------- Knock type / With mechanical pencil eraser Weight: 25.2g Lead diameter: 0.5mm Ball diameter: 0.7mm Ink colors: Black, Red, Blue, Green Size: Shaft diameter 14.1 x thickness 16.0 x total length 140.6mm Refill: SXR-80-07 ※Different size refills SXR-80-38, SXR-80-05 can also be used.