Dyeing Tube Raw Material: Rolypropylene Upper Inside Diameter (mm) Lower Inside Diameter (mm) Temp.Resistance(C) FS3238 33 38 130 FS3452 34 52 130 FS3540 35 40 130 FS4955 49 55 130 FS5656 56 56 130 FS5762 57 62 130 Remark: the above index just for your reference You may be interested in our other products: 1. 100% Recycled Fiber Thread 2. 100% Staple Spun Coarse Count Multi-Thread 3. Aramid Performance Thread 4. 100% Staple Spun Polyester Thread 5. Fengshu Poly-Poly Core Spun Thread 6. Competitive 100% Staple Spun Polyester Sewing Thread 7.Fengshu 100% GRS Certified Recycled Poly-Poly Core Spun Thread 8. Fengshu Cotton-Poly Core Spun Thread