Techniks 17001 | BT30 Taper x 0.470" Size x 0.980" Diameter x 1.770" Projection Length Morse Taper Tool HolderTechniks 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. Taper ground to AT3 accuracy or better. 0. 0002" runout from taper to tool pocket. Each holder is lab certified for accuracy and comes with its own performance report.