35–45mm Adjustable Fork Seal Driver. This adjustable fork-seal driver presses fork oil seals squarely into the lower fork leg on compatible 35–45mm fork tubes. Use it where the adjusted driver bore matches the fork-tube outside diameter and the driving face bears squarely on the seal’s outer edge without contacting the sealing lip. Fitment / Compatibility Universal / Custom: Confirm the fork-tube outside diameter is within the 35–45mm range, plus the driver split style, drive-face contact on the seal’s outer edge, and fork-leg access before use. Product Details Use area: Fork-seal driver. Adjustable fork-tube range: 35–45mm. Before Ordering Confirm fork-tube outside diameter, seal dimensions, driver split design, drive-face contact, and fork-lower access. Lubricate the seal lip and protect the fork tube during installation.