The slots on the angle plate is given for

slot plate   Dan slot no 1

The T-slot plate is supplied with a smooth, closed bottom; that allows you to suck the plate on a vacuum table For mounting on a machine table frame

Cast Iron T-Slotted Bed Plate Floor Plates · Cast Iron T-Slotted Slot Bed :Precision engineered Resistant against corrosion High strength Grooved plate 30x100 M L100-5600 Modular plate profiles with multiple slots for experimental constructions of any dimensions; Slot spacing 25 mm

game slot demo gratis Gusset plate groove 10 B type,accessories,aluminum profiles,strut profiles,slot nut,hammer nut,machine building profiles  The V-slot gantry plate is designed to run on all 20mm sides of V-Slot linear rail This gantry plate is made from 6061-