Straight Bar-25MM is when two cylindrical, straight rods are affixed to the barbell's ends on either side. The weight plates are attached to this part of the barbell to increase resistance.
Straight Bar-12MM is when two cylindrical, straight rods are affixed to the barbell's ends on either side. The weight plates are attached to this part of the barbell to increase resistance.
Straight Bar-10MM is when two cylindrical, straight rods are affixed to the barbell's ends on either side. The weight plates are attached to this part of the barbell to increase resistance.