The is a premium 3-in-1 drawing instrument designed primarily for artists and technical illustrators. It is celebrated for its unique gravity-based mechanism that allows users to switch between three different lead calibers— 0.3mm , 0.5mm , and 0.7mm —simply by rotating the barrel. Key Features & Benefits

: Usually comes with spare erasers and a complete set of replacement leads for each size. Performance Insights

: To select a lead, you face the desired caliber label upward and press the back button.