... with lowest price 2.Good interchangeablity & high strength 3.Smooth surface Taper Bushing:1. European Standard Type: ... , 2012, 2517, 3020, 3535, 4040, 4545, 5050.2. QD type: JA, SH, SDS, SD, SK, SF, E, ... F, J, M, N, P, W, S.3. Material: Steel, Cast iron,GG254. Surface treatment: black, ... Excellent and high quality control, advanced producing equipment.3. Easy to install with long lifetime, high degree ...