Techniks 143.123.20.600 | PSC6 Taper x 1.260" Shank x 6" Length ER20 Collet ChuckTechniks mission is to provide high quality and innovative solutions that optimize manufacturing processes for customers engaged in metalworking, composites machining, and woodworking to meet the most challenging applications, improve machining processes, and create cost efficiencies. For turn mill machines that accept "C" style toolholders. Balanced to 25,000 RPM at G2. 5 tolerance. Each holder is individually lab tested and certified for quality and