T-slot aluminum rail - regular or lite?

T-slot structural framing is a framing system consisting of lengths of square or rectangular extruded aluminium, typically 6105-T5 aluminium alloy,

T-slots are an unofficial standard for framing systems that consist of square or rectangular extruded aluminum lengths They have a 'T' shaped slot along at

the mummy win hunters slot I'm not in a hurry since new wheel hasn't arrived yet but is it so that nobody else doesn't want to adjust the pedals depending on car?

tslot rails for truck But T Slot Aluminum Extrusions in India Precise Cutting