Genuine Bosch leaf spring — part no. 2610915709. This small stamped spring (leaf spring / tension plate) is the original Bosch replacement that supplies the return/tension force in the saw’s locking/lever/holding assembly—it’s the tiny spring that lets the linkage and detent retain and release correctly.

Common fit: used on Bosch GCM12SD sliding mitre saw variants (examples: type 0601B23503, 0601B23508 and 0601B23541) — it appears in the GCM12SD parts diagram alongside the linkage (2610915707), holding fixture (2610915708) and lever/cam parts.

What you’re getting: one genuine Bosch 2610915709 leaf spring (sold individually). It’s a direct drop-in replacement when the original spring is broken, flattened or missing — swap it into the linkage assembly to restore proper tension and reliable locking action.