Šestihranný šroub pro uchycení pera obraceče Kuhn GF – vhodný pro Kuhn GF 7000, GF 7001, GF 7501, GF 7601, GF 8501, GF 10601, GRS 21, GRS 24, GF 22, GF 440, GF 452, GF 671, GF 3701, GF 4000, GF 4000M, GF 4201, GF 4201MH, GF 5000, GF 5001, GF 5001MH, GF 5801, GF 6000, GF 6001, GF 6301, GF 6401.