FenderMate Prime Assortment Kit 36/Pk. Includes 18 each of short and long sizes. Unique combination of a preparation shield and a sectional matrix for Class II fillings of Primary Teeth. Interproximal plastic wedge with an inbuilt steel plate. Thin "boat-shaped" tips allow them to be inserted buccally or lingually into tight interproximal spaces and condense gingiva with less risk of bleeding.