Folding Spinner Size Diam. Shaft Yoke Graupner Folding 45/6/8 45mm 6mm 8mm Graupner Folding 42/6/8 42mm 6mm 8mm Graupner Folding 42/5/8 42mm 5mm 8mm Graupner Folding 38/6/8 38mm 6mm 8mm Graupner Folding 38/5/8 38mm 5mm 8mm Graupner Folding 34/5/8 34mm 5mm 8mm Graupner Folding 34/4/8 34mm 4mm 8mm