Angle steel made of steel grade S235JR hot-rolled. We use angle steel to reinforce the axes of longer CNC machines. The advantage of angle steel is that it takes a little space but is very strong when it is screwed in place. You need to drill holes through the angle steel and attach it with self-drilling screw and possibly silicone. The steel is not stainless, so it is recommended to paint them. Please note the dimensions can vary about 2mm to both ends. The freight is expensive when we send steel, but we only take out the actual cost. Buy this locally if possible.