I have played many Cowbell mounts for the bass drum, and while others have given me issues with either sliding from the bass drum, or not allowing enough mobility for where I want my cowbell to go, this solves those issues for me.
Firstly, you can put the mount off to the side of your bass drum, and then adjust the L mount straight, so it will never be slanted when mounted off to the side.
It also has enough room to fit your main cowbell and maybe a small Cha Cha bell or jam bell.
Quality build, complete with a rubber grip that won't stain or mark the hoop of your bass drum.
It also has an unbranded look, so if you are an endorsee of a different company, there should be no problem using this product.
For me, the best cowbell bass drum mount on the market, especially with its position.