Grobet Swiss Pattern Needle Files 6-1/4 Inch Set of 12 Cut 4 The 4" (10 cm), 5-1/2" (14 cm) and 6-1/4" (16 cm) sets consist of one each barrette, crossing, equalling, half-round, joint round edge. knife, marking, round, slitting, square, three-square, and warding. The 7-3/4" (20 cm) sets consists of two each half-round, round and three-square and one each barrette, crossing, equalling, knife, square and warding. Swiss Pattern files means a type of fine file used for precision filing of jewelry, instrument parts, and dies. It does not necessarily mean that all Swiss Pattern files are Swiss made. Used by Professionals