Square draft 17x17, square draft 14х14, Protyazhka kvadratnaya 10x10, Kharkiv region.

Protyazhka square 17x17, protyazhka square 14x14, Square broaches 10x10 2401-0753 I GOST 26478, Soviet square broaches, broaches for square holes with sides from 12.5 to 60 mm., two-pass broaches of universal purpose, intended for processing square holes with sides from 12.5 to 60 mm according to GOST 9523, GOST 6424, GOST 5260, GOST 16030, GOST 18828,, hexagonal threads, round threads, tungsten carbide electrodes