Universal Spacer Mounts for T1 and T1-3/4 LED's Keystone Universal Spacer Mounts for Tri-Lead & Bi-Lead LED's feature a unique design that separates leads and retains Tri-Lead and Bi-Lead components. The mounts provide height control, lead retention and stability. Universal Spacer Mounts can also be used for mounting lamps, resistors, transistors, diodes, capacitors, etc.