Tension rods that go through the drum hoop into the drum lug for tuning your drum. NOTE: Our tension rod lengths are measure is stated from under the head down to the end of the threaded tip, NOT the full overall end to end length..Our rods DO include the metal flat washers. These are sometimes loose, but often captured to the rod for convenience. If you have a specific need for your washers, please call us for direct help. Some customer have reported this rod length to be a nice one for retrofitting some vintage Ludwig Club Date toms. These rods have about 1.52 inches of thread at the bottom end, so some will chop them down to make a 7 .5 -8 inch + rod Call us for further details. All our tension rods have the modern day standard thread of 12-24 and are sold as a single tension rod, not a pack or many.