It features ultra-retentive NiTi matrix rings that deliver non-slipping contact and exert the ideal tooth separation force. ● Ideal tooth separation force delivered by NiTi rings ● Designed for easy stacking of multiple retainer rings ● Guiding-rails on tines match the wedge profiles for better insertion ● 2 rings: standard for large teeth and narrow for small teeth ● Stays put on the teeth and stackable ● Autoclavable retainer rings Ring: ● Outstanding NiTi spring strength and memory provides optimal tooth separation force ● M-shaped tines accommodate wedge profile ● Undercut tine design improves durability and stability during placement ● Stackable for multiple restorations A4-Matrix: ● Pronounced marginal ridge for correct anatomical form ● Greater curvature on horizontal plane means more curvature remains as matrix wraps around tooth ● Gingival apron is shaped to eliminate gaps in the gingival-axial corner and conform to common cavity form Wedge: ● Wedge profile matches tine shape for easy entry and placement to provide the ultimate seal ● Stackable wedge design Kit contents: 20 - 3.5 mm M4 Matrix Bands 20 - 4.5 mm M4 Matrix Bands 20 - 5.5 mm M4 Matrix Bands 20 - 6.5 mm M4 Matrix Bands 1 - A4 Sectional Matrix Ring Forcep 1- Forcep for placing matrix band 120 - Diamond Wedges W4 3.1 (5 Models, 24Pcs each) 40 - Adaptive Wedges W3 1.0 15 - Wedge Guards M3 3.0 (5 each of L-Purple, M-Orange, S-Green) 2 - Nickel Titanium Ring R5 1.0: (2 Models, 1 each) Orange - Molar, High Crown 6.3 mm Blue - Premolar, Low Crown 4.8 mm 1 - Nickel Titanium Ring R1 2.0 2 pairs of elastic silicon;