This is a bench curl shaft that was custom-made for me at a training gym a long time ago. I was told that the shaft itself is quite expensive. I was told by the manufacturer that it's the same type of shaft used when a weight specialist installs 10-ton class machines (this is just what the manufacturer told me). Length: 129.5 cm Weight: 17.3 kg Shaft diameter: 42.2 mm (Weight diameter: 48.8 mm) Olympic plates can be used. I used IVANKO, Irotec, and Hercules Olympic plates with it. This is an Olympic shaft for bench curls that I used when I was actively training. The grip shaft diameter is thicker than Olympic shafts, at 42.2 mm, so you can do some pretty intense training. The thick grip shaft also helped strengthen my grip. The gym where it was made has closed down, so use it at your own risk. You can see the weight retaining hardware in image 8, so please check the image. (I've added a commercially available band for extra security, although the gym said it should be fine, I've added it just in case.) There's a crack in the collar in image 3, but I think it's just the plating. If you're concerned, please replace it. I haven't checked it, so please understand. There are also scratches and rust, so please check the images and only purchase if you are satisfied. Please refrain from purchasing if you are overly concerned about the condition. Please make your judgment based on the images. This is weight training equipment, so please understand that it is sold as-is, with no returns, exchanges, or refunds. Keywords: Barbell Dumbbell Shaft Plate IVANKO Irotec Hercules Weight training Powerlifting Fitness Training gym Training equipment Olympic shaft Olympic barbell Martial arts Judo Karate Boxing Arm wrestling Exercise Muscle training