1 Dia:1-10mm, Length: 150/175/178mm 2 Model: WT20, WC20, WL10, WL15, WL20, WZR3, WZR8 3 OEM, ODM is supplied 4 Good quality Item-No.Type of productTip-ColourOxide.Composition %DiameterLength /Height 1Pure Tungsten (WP)greenW 99.81mm-10 mm150/175/178 mm 2Ceriated Tungsten (WC20)greyCeo2 1.8-2.21mm-10 mm 3Thoriated Tungsten (WT10)yellowTho2 0.81.21mm-10 mm 4Thoriated Tungsten (WT20)redTho2 1.7-2. ...