Sleeveless, Fray free TRU-Tungsten's OEM supplier 100% producer, everything made by ourselves TRU-Tungsten's OEM supplier, 9 years in Tungsten, own plant, integrate design, manufacturing, This is our strongest product, You will never get disappointed with its quality. Every of our product, very carefully produced, Highly praised by our customer.Without sleeve, tube inserting, coating, painting, ...