BANJO HOOP (POT) OR RIM. CLIFFORD ESSEX QUALITY. BRAZILIAN EBONY TONE RING. 11″

As previously mentioned, the tone ring material is Brazilian Ebony which has a Janka Hardness 3692. If you are not familiar with the Janka Hardness standard, this is what it means. The Janka number is the number of pounds of force it takes to embed a steel ball, 0.44” in diameter, exactly halfway into wood. On my chart, Brazilian Ebony comes under Lignum Vitae, probably the hardest known wood. Lignum Vitae has a Janka Hardness of 4500. Brazilian Ebony is certainly the hardest wood we have ever worked with and makes an excellent tone ring for the head to vibrate on. So, if our sums are correct, it would take approximately 1.85 tonnes of pressure to embed the 0.44” ball halfway into Brazilian Ebony. Some tone ring! Postage to UK Destinations: FREE (1st class signed for)    European Orders - Royal Mail International Signed (£15.00). Rest of the World – Royal Mail Tracked (£22.50). If required, it is the responsibility of the customer to pay any taxes or import duties for customs clearance. If required, it is the responsibility of the customer to pay any taxes or import duties for customs clearance.