I bought these to convert the J type rods on my 1974 Premier bass drum. Although the originals look great they are impractical for tuning the drum and keeping it in tune. Drum key tension rods are much better on bass drums in my opinion. After doing a bit of research I found these Millennium ones to be the correct length so got hem on order. They are perfect, well made and feel like they will last forever. On top of this they are very well priced.