Herco Metal Frame Door Silencer Bumper URT-601G - Grey Rubber - 6 pcs | eBay
Herco Metal Frame Door Silencer Bumper URT-601B - Black Rubber - 6 pcs | eBay
Rubber Door Silencer Metal Door Silencer Hinge Outlet Door Silencer Metal Door Anti Collision Silencer 1/2 Inch Diameter for Metal and Metal Frame (100 Pcs) - Amazon.com