Ashford Basic Jumbo Flyer with Bobbin - BJFU The large bobbin and orifice allow spinning chunky and novelty yarns or production spinning and plying. The orifice has a large 19mm(3/4in) bearing. Very quick and easy to fit – just swap the maid upright bearing.For Traditional and Traveller wheels. Includes ; Jumbo flyer 1 jumbo bobbin Threading hook Instructions Drive band – to replace existing drive band Brake band 2 tension springs – to replace existing brake band Jumbo bush – to insert when spinning fine yarns Reducer bush - so you can use your standard flyer without changing the bearing Jumbo hooks – for chunky yarn Specifications type of drive single drive ratios 4.5, 7.5, 9.5, 13.5 orifice 15mm (¾") included accessories 1 x Jumbo flyer12 x Jumbo hooks1 x Jumbo bobbin1 x Jumbo bush1 x Reducer bush1 x Threading hook1 x Drive band1 x Brake band2 x Tension spring1 x Instructions compatibility - Traditional (single drive)- Traveller (single drive)