Taper Bushing: 1.Super high quality with lowest price 2.Good interchangeablity & high strength 3.Smooth surface Taper Bushing:1. ... , 1310, 1610, 1615, 2012, 2517, 3020, 3535, 4040, 4545, 5050.2. QD type: JA, SH, SDS, SD, SK, SF, E, F, J ... treatment: black, phosphateFeatures:1. Standard method for measureing keyseat depth.2. Excellent and high quality control, advanced producing equipment.3. Easy ...