Uni-Ball Kuru Toga Mechanical Pencil 0.5mm HB Self-Sharpening M5450T The Uni-Ball Kuru Toga Mechanical Pencil has Revolving Lead that Keeps the Lead Tip Sharp and Makes it More Resistant to Breaking. Uni Nano-Dia Leads are the very latest in pencil lead technology. 400 million 'nano-diamonds' per lead improve smoothness and strength and high viscosity oils improve smoothness and darkness. Its a 0.5mm pencil with a fixed lead sleeve. 143mm long, approx 10mm diameter and 10g in weight. The polycarbonate barrel has a gently ridged grip section through which you can clearly see the 3-gear rotation mechanism in operation. Removable protective cap to reveal a refillable mini eraser. Available in 4 colours; Smoke, Blue, Pink or Yellow. Free Worldwide Postage One Day Dispatch Free 30-Day Returns