The S1LEDM LED mount is designed to hold any of Thorlabs' TO-18, TO-39, TO-46, or T1-3/4 packages using the included adapter rings. The external SM1 threading on the S1LEDM mount allows the mount to be used in a wide variety of SM1-compatible optomechanics, including our Kinematic Mounts, Cage Plates, Lens Tubes, and XY Translating Mounts. To aid in threading the retaining ring into the S1LEDM, an SPW301 spanner wrench may be used.