HSW-1

The blade-retractable saw HSW-1 features the classic H-1 frame: wheel blade lock and handle with easy-to-hold large cushion rubber. Electroless-nickel-plated full-fledged toothing blade HSWB-1 delivers the ultimate combination of extra-toughness and extra-sharpness. Compact when carried about, with full-fledged usability.

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https://www.olfa.co.jp/en/products/678.html