18 claws to get perfect sealing: -Re-engineered, by adding a plastic tendon To each claw, to add a higher durability to the claw by attaching it to the main body. Articulated frame: (Foldable for easier X-ray) -The hinges are designed to allow folding movement, to add maximum comfort when taking x-ray. -The inner pins are designed with three anchor points, that secure it inside the joints with a tight fit. Frame wings: -Are designed to remain it open at specific angle during folding, to prevent any stress on the clamp. -Envelope technique Wings make the envelope technique more easier, with a opposite attachment of rubber dam between upper and lower side. Raw materials specifications: Material name: Polyamide + DR™ anti-fire agent. -Autoclavable 134°C. -Density 1.36 g/cm3. -Hardness 80 ShD. -Tensile strain at yield 3.26%. -Tensile stress at break 156.04 Mpa. -Deformation temperature point 165°C. -Melting temperature 220 °C. Packaging: -Box Contains 3 Frames. **For further product information , please contact Chat support**