Original DeWalt spindle lock, part number 326616-04 — black spindle-lock assembly designed to engage a 15 mm spindle for secure bit changes. It restores the router’s spindle-lock function so you can lock the arbor while loosening or tightening the collet; the piece is a direct-fit replacement made to match DeWalt tolerances and fitment.

Fits a range of DeWalt routers, including :

• DeWalt DW620 Plunge Router
• DeWalt DW621 Plunge Router (including Type 1 and Type 2 variants)
• Elu OF97 Plunge Router
  If you are swapping out a damaged spindle lock, it is highly recommended to check the condition of your Collet Nut at the same time. If the collet threads are cross-threaded or damaged, it will put undue stress on your brand-new spindle lock assembly."