Spacer, for lining the profile backs of the TKS system for wall and hanging pole mounting, please order fastening material separately depending on the application SKM 10X70 E3 or SKM 10X25 E3. for boom/hanging pole: TKS... for support bracket: TKSU... TKSUG... Dimensions (approx. dimensions) H x W x L: 19.5 x 22 x 47 mm Material thickness t: 1.5 mm Center hole diameter: 11 mm Material: stainless steel, material no. 1.4301