Proulx Mfg., Inc. offers an array of replacement parts for all trimmer heads and tri blades. No need to replace your until when only a few parts are worn. All replacement components are easily identified in red on the exploded diagrams for each model.
| UN-10L | UN-31L | UN-32L |
| UN-34L | UN-34R | UN-38R |
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| UN-60L | UN-61L | UN-62L |
| UN-64R | UN-69R |
| UN-72L | UN-74L | UN-74R |
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| UN-46 | UN-50 | UN-55 |
