B&T Industries - Atlas Raider Cleats 5H - BT-BT75 :

The BT75 Atlas 5-H & Super CAL Raider Cleat Feet are turned from 303 Stainless Steel bar stock in one piece for strength and durability. They will fit 5-H and Super CAL model Atlas Bipods. Easily installed with the press of a stainless steel plunger.

The Cleat portion is approximately 0.85 inch long with the largest outer diameter of approximately 1.443 inch. Sold as a pair. Available in raw stainless steel only..