3 Fedi Periodontal Chisel, #6 Handle 3 Fedi Periodontal Chisel, #6 Handle Sign in to save to your list CPF36 The 3 Fedi Chisel is used for incisions that remove or recontour soft tissue and to excise interproximal tissue with 2.8mm working end at 40 degree angle. Where to Buy Ask a specialist