Riser Block Compatible Table Hole Size 5/8 in Compatible With Buildpro Welding Table Features (2) Slots at One End for Adjustable Positioning Mount a BuildPro Plate to the Side or End of the Table or to Join Tables Together Holding Capacity 1 000 lb Overall Height 12 in Overall Length 4 in Overall Width 4 in Product Type Heavy Duty Riser Block Work Surface Pattern 5/8 in Hole Every 2 in Diagonal Pattern