Graded Caste Iron Quality Precision Vee Angle Plates Stress Relieved, Machined Slots, Edges Are Chamfered Well. Heavy Duty Size Is 4" X 4" X 6" (100 X 100 X 150 Mm) : T-slotted) Graded caste iron quality precision vee angle plates Stress relieved, machined slots, edges are chamfered well. Various sizes in variants of both slotted and tee-slotted options are available