*WARNING: CONTAINS SMALL PARTS. KEEP OUT OF REACH OF CHILDREN AND PETS.*
This is a 2" Weighted Frag Plug with a 51mm Vertical Post made to lift coral frag plugs up 2" in the air. Has a standard 12mm-11mm tapered frag plug stem which will fit into any rack or egg crate, including CFT Frag Racks.
The inner diameter of the insert hole is 12.5mm and it is 19mm deep which will fit any standard frag plug. Designed for use with standard frag plugs.