Techniks 04547-7/8 | 1.610" Diameter x 7/8" Shank ER40 Bearing steel Sealed ColletTechniks 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. Techniks Steel Sealed Collets are compatible with any standard ER, RD, DR, ESX, or BR Collet Chucks for coolant thru tool applications. Steel Sealed Collets perfect for