RS1.1      Single Shelf Support
Shelf thickness:      
6mm (1/4") to 10mm (3/8")

Drill hole:
Ø 10mm (3/8")
Minimum slot width:
2mm (5/64")

RS1.2    Single Shelf Support 
Shelf thickness:   
10mm (3/8") to 12mm (1/2")

Drill hole:
Ø 12mm (1/2")
Minimum slot width:
2mm (5/64")