... 10mm,11mm,12mm,13mm 3.T,Y,Four way Specifications:1.material:aluminum2.process way:casting3.size:outside diameter of ,9mm ... ,10mm,11mm,12mm,13mm4.T,Y,Four ways type5. ... other type:we also have zinc,iron or brass, with zinc or brass plated6.packing: ... good quality and 100% check before shipping Aluminum Four Way