All cast iron. Spring-loaded and removable center rod with cool-touch spring handle. Fits standard 6in. black or blue stove pipe.This item is not for sale in the state of California and Washington. Customers are responsible for checking local codes and regulations prior to purchase. Diameter (in.): 6, Color: Black, Compatible With: 6in. Black or blue stove pipe, Material Type: Cast iron, Mounting Type: Inside stove pipe, Mounting Hardware Included: Yes, Includes: Cool touch spring handle, Pieces (qty.): 1 Stove damper