... Good interchangeablity & high strength 3.Smooth surface Taper Bushing:1. European Standard Type: 1008, 1108, 1210, 1215, 1310 ... , 1610, 1615, 2012, 2517, 3020, 3535, 4040, 4545, 5050.2. QD type: JA ... Cast iron4. Surface treatment: black, phosphateFeatures:1. Standard method for measureing keyseat depth.2. Excellent and ... with fast delivery. Taper bushing