This is a solid 457.2 mm metal spanner bar for use with our surface clamps. It has a centre adjustment screw to align the seam between the SR4X models when extra adjustment is needed.
See example of assembly below.

Example only
| Product Details | |
|---|---|
| Model No. | SR18SB |
| Dimension | 457.2mm metal spanner bar |
| Recommended combination | 1x SR18SB and 2x SR4X |
| Related products | SR4X, The SEAMRITE Starter Kit |
| Price | POA |
