Thank you for viewing. Record Player Tone Arm Universal Sub-Weight for Sale (1 piece) *Main weight and scale in the images are not included. The main weight in image 1 has an inner diameter of 28mm. ◆Inner Diameter Size List (Inner diameter tolerance +0.1 to +0.3mm) 33mm 50g SUS304 (Silver) 32mm 50g SUS304 (Silver) Out of Stock 31.5mm 50g Brass (3604) 30.5mm 50g SUS304 (Silver) 30mm 50g SUS304 (Silver) 29mm 49g Brass (3604) 28mm 50g SUS304 (Silver) 27mm 51g SUS304 (Silver) 25mm 50g SUS304 (Silver) Please select from the above and inform us via the transaction message. *Please comment before purchasing regarding the outer diameter and length. ◆Materials Sub-weight: SUS304 / Brass (3604) Anti-rotation: Brass (3604) *Brass screw with a flat tip that is gentle on the shaft. Easy-to-use minus screw. *Non-magnetic materials suitable for audio are used. ◆Condition: See images. Due to being a manufactured product, lathe marks and chuck scratches may occur. Please understand. ◆How to Use When the cartridge + shell weight is heavy and zero balance cannot be achieved, attach it over the main weight to balance. Especially suitable for heavy-weight cartridges. Due to the ring method, it can be moved back and forth on the main weight. Please check the stylus pressure with a precision scale. *This item expands the options for cartridges and shells. *Zero balance is not necessarily guaranteed. ◆Included Items Sub-weight, anti-rotation, protective tape *Main weight and scale in the images are not included. *Please ask questions for more details. If you have any requests for custom weights, such as different sizes or weights, please ask. If you are having trouble finding a sub-weight, Please take this opportunity to try it out.