Your search for: Part groups, Components, Fastening Assembly Parts, Centering clamps returned 3 hits.
18013 - Centering clamps for 10 mm (13/32'') glass, 50-piece set, for frame system
18014 - Centering clamps for 12 mm (15/32'') glass, 50-piece set, for frame system
18015 - Centering clamps for 12.7 mm (1/2''), glass, 50-piece set, for frame system