The MICRO series comes in two different sizes

Part number MICRO-1 uses standard type SF or SR

drill bushings with a 1/2" O.D. X 1/2" long. Has 6~3/16” slots

Standard bushing ID range .1405 ~.3438 (measures 1” x 3”)

Part number MICRO-2 uses standard type SF or SR

drill bushings with a 3/4" O.D. X 3/4” long. Has 6~1/4” slots

Standard bushing ID range .2812 ~.5625 (measures 1-1/4” x 3-1/2””)

They don't pivot but are so small

“they go where no other bar has gone before”.

They both have three slots to increase clamping possibilities,

or may be clamped down with c-clamps.