Check the listing for details. C 261.1 Tuning Fork - Hardened Steel. Condition: New. Listed at 10.00 USD. These C 261.1 tuning forks are made of hardened steel. They measure approximately 5-1/2" in length. Never strike forks against hard objects, as doing so may permanently alter their pitch. A padded object or your forearm will provide a loud, sustained resonance. Our specialist technician prefers to use a knee cap for striking the fork! Find other great deals on piano parts and tools in our eBay store! >>>We always try to save you money with shipping, and do not charge a handling fee. If we can send it cheaper than eBay calculates, you will get a refund (applies to differences over $2.00). Should you need an exact quote on shipping combined orders, add all items to your cart, then click "request total" from your shopping cart. Forgot to do this? No worries - we'll still calculate the best shipping method, and refund the difference!