Finned cast aluminum short heat shields, these are 9-1/2" long, with the bolt holes 6-1/4" center to center. You need 9-1/2" of straight pipe to fit this heat shield properly. No welding necessary! Included are two cast aluminum brackets, you use the included stainless steel hose clamps to clamp the brackets to your exhaust, and then use the included stainless steel screws to mount the heat shield to the mounts. Heat shields can still get really hot after running your bike a long time, so beware! These are hand made by Fork Co. of Japan, available in the U.S.A. through Lowbrow Customs.