ALORIS BXA-19 ADJUSTABLE KNURLING HOLDER 2 MAX. CNC LATHER QUICK CHANGE USA. Our part # ALO-BXA-19. Excellent knurling, with approach adjustability, is providedwith the newly designed #19 knurling holder. The #19 is self-centering and is adjusted by means of a threaded spindle with left and right hand threads, providing the ideal near-vertical-axis approach angle for a wide range of stock diameters. Spindle and cross-slide pressure are minimal, thus knurling of thin wall tubing is easily performed. Precision ground, 3/4 O. X 3/8 wide, high-speed medium diamond knurls are supplied. Dimensions: A=2″, Knurl Size=3/4×1/4×3/8″. Slash Your Setup Time- instant changing from one operation to another! We also sell custom tooling packages!