Uni-ball Signo 307 Gel Roller 0.5mm
Tip: Stainless Steel Ball: 0.5mm/ 0.7mm Tungsten Carbide Ball
Barrel: Plastic (PC) & Elastic Rubber
Ink Color: 3 Colours (Black, Red, Blue) Ink Refill: UMR-85E/ UMR-87E
√ The uni-ball Signo 307 Rollerball is a gel pen that is retractable which prevents the nib from drying out and allows leak-free storage.
√ The ink it uses is uni Super Ink that makes it waterproof, fraud resistant and permanent perfect for legal documents or for scrapbooking. √ It’s rubberised grip makes it comfortable to use for long periods, and it’s newly developed nib makes it perfect for long essays, if you are a student the Signo 307 is a must.