Dental Sectional Matrix System V3 Plus Contoured Matrix Bands Interproximal Sectional Contoured Refill Metal M4 + NITI Clamps(Universal +Narrow)

["1. The clamp is made of nickel titanium shape memory alloy, with stable clamping force. There are two models: Universal and Arrow.","2.Matrix bands are made of medical grade stainless steel, with high strength and a certain degree of elasticity while possessing toughness.","3.Matrix bands come in four sizes (3.5mm, 4.5mm, 5.5mm, 6.5mm), totaling 100 pieces, and can be used as needed.","4. The curvature of the matrix strip conforms to the natural shape of the teeth, providing a more snug fit and making the user experience more comfortable and easy to operate.","5. The design with perforated protrusions facilitates clamping, placement, and removal of the substrate tape, and is also more convenient to use."]