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| Used with the arch and standard start frame. Drilling every 9 cm. The gap of the holes enables an accurate adjustment. |
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| Square thread, galvanized steel. Enables to stay in correct position. Blocking of the nut on its last lags with security distance. |
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| Spigot doubled, which enables an easy interlocking. Gussets welded on the two sides for a positioning of the lateral guardrails and shifting of walkboard. Welded sliding tubes adjustable in height, diameter 55 mm for shaft base diameter 49 mm. |
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| For SECO, COMINET and TIGRE 's shaft base. |
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