YOFAN 5-Pack Stainless Steel Russian Piping Tips , Large Size Icing Syringe Set SAFE MATERIAL AND DURABLE!Made of food grade 304 stainless steel.It is strong and can last long PROPER SIZE!Each tip:upper dia:0.9" bottom dia:1.48" height:1.69" Coupler size: Upper Dia. 1.43" Bottom Dia. 1.8" Height 1.8" DIFFERENT PATTERNS!5 kinds of very beautiful styles make you be able to decorate your cake beautifully WELL FINISHED!Finished with round edge to make it more convenient to use YOFAN is a Registered Trademark