uxcell Gray Screw Mount Magnet Head Push Open System Hydraulic Buffer Damper Product Name : Damper Buffer;Systolic Overall Size : 86 x 15 x 11mm/ 3.4" x 0.6" x 0.43" (L*W*T) Expand Overall Size : 127 x 15 x 11mm/ 5" x 0.6" x 0.43"(L*W*T);Fit Screw Diameter : 4mm/ 0.169" Material : Plastic, Metal, Magnet;Color : Gray Net Weight : 27g Package Content : 1 x Damper Buffer5 x Mounted Screw1 x Round Plate