Techniks 19474-7/16 | HK 3/4 Taper x 7/16" Sleeve ID x 3/4" Sleeve OD Reduction SleeveTechniks 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. Use sleeves with hydraulic tool holders to run a variety of shank sizes. T. I. R. is only 0. 00012" or less. Sealed to 1,000 PSI for coolant applications. Product