Quadralock™ Catalogue Numbering System Quadralock Boring Bar Identification System MTMM840 MTM M 8 40 Quadralock Type Shank Diameter Length Boring System shown as “D” shown as “L” M = Metric Metric Metric 8 = 8,00mm 40 = 38,10mm 10 = 10,00mm 100 = 101,60mm 12 = 12,00mm 127 = 127,00mm 16 = 16,00mm 22 = 22,00mm widia.com D73