16pcs black anti-vibration silicone pads for up to 2 compatible fans. Universal Design - silicone rubber mount with Nuts M5, set of 16 pieces, black. Damping Capacity - rubber vibration isolation cushion for shock absorption and reduce noise. Strong and durable black silicone rubber with 0.78 inch (2 cm) diameter and 0.39 inch (1 cm) height. Compatible with 80mm, 92mm, 120mm, 140mm Fans.