[4 combs (3 mm / 4mm / 6 mm / 9 mm)]: Adjustable clamping comb is suitable for cutting hair of different lengths. And the movable guide comb can quickly and easily replace the comb and increase versatility. The skin-friendly contour comb makes it safe, convenient. [Low noise, low vibration design]: Pet hair trimmers for dogs have an extremely quiet and low vibration design! which makes pets feel comfortable, no longer afraid of cutting hair and ensuring comfort and safety. [Safe and sharp blades]: Improved and adjustable blades provide excellent cutting performance. The blade is sharp enough and long enough. Removable blade, easy to replace and clean. Animal hair trimmers are washable and waterproof.