Lanxivi Jinhao 450 Roller Ball Pen with Pen Pouch Chinese Red Lacquer Black Line Refill : standard . Jinhao has two type refills for their rollerball pens . One is push type while other is screw type . If your refill is push type ,you can purchase the jinhao or duke push type refills (ASIN :B0130LL8L0 ) . If you refill is screw type , it works with jinhao and montblanc screw type refill ( ASIN : B01LX1D6WI) Capped length 140mm ,Diameter 13mm , pen weight 45g Package :one pens and one lanxivi pen pouch as picture shown 100% Satisfaction Gurantee : If there is any reason you do not like the pen ,just send us a message ,we can offer you a full refund or replacement !