Olympic Shaft Spacer 30mm Black (Pair) These shaft spacers are for barbell collars on powerlifting barbells with thinner shafts. They are very lightweight, so they can be used without issue even by those training at a competitive level. The images are sample images of 10mm, 20mm, and 30mm thick black spacers, respectively. - Sold as a pair - For Olympic shafts - Diameter: 70mm - Inner hole diameter: 50.2mm Custom diameters and lengths are available. An additional 500 yen or more will be added depending on the specifications. - Approximate weight (per piece) 10mm → 15g 20mm → 20g 30mm → 30g - Production upon order, so please allow 2-3 days for shipping. - These are individually made 3D printed products, so minor imperfections that do not affect use are not covered by warranty.