The B-MF Rubber Mountings are one of shock absorber screw with professional technology, inimitable formulation and full set of moulds without mould cost. one side is male bolts and another side is female screw made with high quality zinc coated metal and standard screwthread, the middle is high quality rubber of NR, NBR, EPDM, SBR etc.(currently rubber is NR). Apply to the anti-vibration and shock absorption for all kinds machinery, include mobile anti-vibration parts, health care equipment, machinery anti-vibration parts, computer parts.