The Arch easily mounts to your bass drum by replacing two lugs with two included A.T.L.A.S. Mounts; NO DRILLING REQUIRED.
The Suspension is IN the Mount
Utilizing the revolutionary new A.T.L.A.S. mount, the rail and sliding tom mounting arm are totally isolated from the shell; insuring the tone of each individual drum without "cross-talk" when played together.
Ludwig LAC2983MT Atlas Rail Mount