The TG100 Techniks Collet Set 04010-21S is a 21-piece double angle collet set ranging in size from 3/8" to 1" by 32nds. Made by the reputable brand Techniks, this collet set is specifically designed for use in CNC, metalworking, and manufacturing applications. These high-quality collets provide precise workholding and toolholding capabilities, making them essential tools for businesses and industrial operations requiring accurate and efficient machining.