Item Includes:: [Please note] This item is listed below includes x 2 set is – working days. Button light with no modification allows you to adjust the amount of liquid in the container. Product Specs in capacity: 18ml Advanced Core Diameter: 1 mm use: oil-based, water-based ink pens for men Color: White Material: Cap: Play POM, body: PA, nib: Play POM, front axle: PBT Weight: G