Bluckincle 24 Pack Multicolor Pen 6-in-1

Specifications: Pen barrel length: 5.5 inch Pen barrel diameter: 0.63 inch Refills tip size: 0.5 mm Ink color: Each ballpoint pen has 6 different colors black red orange green blue and purple The 0.5 mm refill has a spring-loaded retractable design that allows the pen to switch colors smoothly and freely and the ink to write smoothly and vividly.