... Most popular QD taper bushingFirst,Introductions:1.The QD bushing is used throughout the industry offering convenience and design flexbility.They ... gray or ductail iron and are installed by tigtening several cap screws.2. European Standard Type: 1008, 1108, 1210, 1215, 1310 ... , SH, SDS, SD, SK, SF, E, F, J, M, N, P, W, S.4. Material: Steel, Cast iron5. Surface treatment: black, phosphateSecond ...