RCA Branded Xcelite Tools USA, Set 21 Pezzi, Serie 99 Avvitatore Dado
Unfortunately the handles, 99-1 and stubby 99-3 have owners' marks "RLS" on them The driver handles are RCA branded. 19 bits, including 3 stubby, 3 magnetic, 1 extension, 4 screwdriver, and 8 nut driver bits.