- D.I.Y. butterfly kit allows you to make frames of any dimension
- Works great with 38.1 mm/1.5'' aluminium speed rail
- A series of T-knobs are used to lock and secure custom rails
- Complete with ears to connect to overhead stands
- Nominal bore: 38.1 mm/1.5''. Outside diameter 48.3 mm/1 29/32''
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