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Designed to compress valve springs on overhead valve engines. ncludes two valve spring adapters, which fit valve spring retainers up to 1" (25mm) and 1 3/16" (30mm).
| Style Compression Used | Direct Action |
| Contents | (1) Tool, (2) Adapters |
| Compressor Throat Depth Range | 5 7/8" |
| Manufacturer | Owatonna Tool Company |
| Manufacturer Part Number | 4572 |
| Spring Compressor Jaw Opening Range | 1 3/8" To 5 5/8" |
| Style | Large |
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