OASISGUEST Xeno Lunatic Lunny 0.38mm Slim Ball Point Pen Dozen Box 12 Pcs, Made in Korea (Black 12pcs) (Black 12pcs)

https://www.amazon.com/dp/B0BL39THMC?ref=cm_sw_r_apin_dp_VC5HGXKA770NGZYCE3E8_1&ref_=cm_sw_r_apin_dp_VC5HGXKA770NGZYCE3E8_1&social_share=cm_sw_r_apin_dp_VC5HGXKA770NGZYCE3E8_1&rsd=kOkEddzRBOEAGyps6pwTj8KrXwOt5NWtR%2FLAWGb9NR3P44PPA%2F1bIDtezZJZGnCnFWqQxyJXed1FbpL8GqZLT4H9UKqGvg3BpWHy70s4mUNnVU3k&edk=AQIDAHi1lw%2FM8UbbSMD9ScOOFEmBMHMthHeEhqDaQYPJUAX3jQF8yq491c2LnWV3SV5%2BDwRKAAAAfjB8BgkqhkiG9w0BBwagbzBtAgEAMGgGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQM6tKxjcO5KHmcVvTtAgEQgDvtdPEmQGEQmEB19WeSGCYQ9oaQrvABSazNzV4oeq91aGj0USJ%2BgUrbpeWKhkeC4LR3ou2xqeQP4vmjpg%3D%3D These are what I usually use. But they’re not nice looking and won’t sit snug in the leather one loop. I’m fine going to 0.5mm