Dimensions: Length 71mm, Width 64mm, Clamping distance 47mm, Wheel diameter 8mm. Measured manually, please allow slight errors. This glass cutter is suitable for small glass tubes (cut to approximately 2 cm in diameter), and is applicable to tubes with diameters of 20-45mm. It features a round blade and tweezers design for easy manual operation. This tube cutter can also be used to scribble lines on the circumference of tubes. It is suitable for borosilicate glass and flint glass, achieving a very clean and crisp break. This glass cutter is for teaching or personal use. Please be careful to avoid cutting yourself. Replace the blade when it wears out to ensure continued use. Please note that this product cannot completely cut through glass tubes; it can only cut a path. Afterward, you will need to alternate between hot and cold water to rinse the glass until it breaks. This product is not suitable for cutting tubing used in water-cooled computers., Manufacturer: eMagTech