Threaded: M3 6mm / M4 10mm/ M5 12mm. Rubber Size(Dia x Height):8 8mm 10 10mm 10 15mm 15 10mm 15 15mm 15 10mm 15 15mm 15 20mm. Material: natural rubber and steel. - Protect the body's normal work and get good surroundings, damping noise reduction and the effect is obvious.
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