ArborsArbors aka. Roll shaft,Website:http://www.kdroll.com, it is compatible to sleeves. It is normally used for universal mills.We produce various qualities for sleeves and roll shaft, such as SGP, SGA, Adamite, GT Adamite.Table.1 Chemical Composition % NameCSiMnCrNiMoSGP2.90/3.601.00/2.200.40/1.000.20/1.201.50/3.000.20/0.80SGA2.90/3.601.00/2.200.20/0.800.20/1.503.00/4.500.50/1.00Adamite1.50/2. ...