Tension rods that go through the drum hoop into the drum lug for tuning your drum. NOTE: Our tension rod lengths are measured from under the collar down, not the full overall length. These bass drum rods have the same thread pattern and rod diamter as all our standard tension rods - they are simply longer. NOTICE: It is very common in our industry for black drum parts to have a wide range of color variation from part to part. Example: Hoops and tube lugs may be lighter black-chrome, where rods,lugs and other parts may be a darker solid black. Please contact us before ordering if you have questions about this.