The inserted plastic part serves the purpose of reliably fixing the Hawle telescopic extension spindle when using the concrete base plate (model no. 204-02), preventing an unintentional lowering of the extension spindle.
Product: Hawle (Ord. No. 204-03) or equivalent Plastic inset of PP for concrete base plate (Ord. No.: 204-02) for safely fixing of Hawle telescopic extension spindles (Ord. No.: 960-00, 960-01, 962-00 and 962-01).