Baileigh 10 Ton Hydraulic Metal Bench Press BP-10E with 25-Inch Throat Depth & 4-Inch Stroke 110V Power Pack What does "concealed-flange" mean on

What does "concealed-flange" mean on the HUC310

which allows use of all mill tooling for broad compatibility with standard milling and drilling accessories

Overall Length 90mm (3-35/64")

The CMT 815

Baileigh 10 Ton Hydraulic Metal Bench Press BP-10E with 25-Inch Throat Depth & 4-Inch Stroke 110V Power Pack What does "concealed-flange" mean onThe Baileigh 10 Ton Hydraulic Metal Bench Press BP 10E is a heavy duty hydraulic press engineered by Baileigh to deliver reliable performance across a wide range of metal fabrication tasks. With its rigid electro welded steel plate construction and generous 25 inch throat depth, this bench press is built to maintain accuracy at maximum capacity making it a practical centerpiece for any fabrication shop. Key Features 25" throat depth can accommodate