20:1 tuning ratio
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Lightweight large Post Bass Key and screw-in bushing. 1.7 oz / 48 grams, 20:1 ratio - left-treble side£21.49From £10.75 /1 in stock- Lightweight Small Post Bass Key - 1.7 oz / 48 grams, 20:1 ratio - left-treble side From £16.99 /1 in stock
