2.0" x 2.0" Base Plate 'A' Tap Thru = 1/2-13
Part # 10BP2560
Regular price $ 10.67
Part #:10BP2560
Material: Clear anodized aluminum
'A' Tap Thread: 1/2" - 13
Mounts on the extrusion end* or side
Recommended Hardware for T-Slot Mount:
(4) 1/4-20 x 1/2" SHCS 
(4) 1/4-20 Economy T-Nut
Recommended Hardware for End Mount*:
(4) 1/4-20 x 3/4" SHCS