Thank you for viewing. Record Player Fidelity Research Fidelity-Research FR-54 Sub-weight for tonearm, 40g (1 piece) for sale. ※ Images 1 and 5 are examples of installation and are not included. ◆ Size: See image Inner diameter is made to match the outer diameter of the arm shaft. Outer diameter: approx. 29mm, Length: approx. 10mm Weight: 40g (±1g) ◆ Material (non-magnetic materials used) Weight: SUS304 Rotation stopper: Brass (C3604) ※ Brass screw with flat tip, gentle on the shaft Easy-to-use minus screw ※ Non-magnetic materials suitable for audio are used. ◆ Condition: See image Due to being a manufactured product, lathe marks and chuck scratches may occur. Please understand. ※ The inner diameter O-ring and felt of the genuine product are not included. ◆ How to use When the weight of the cartridge + shell is heavy and zero balance cannot be achieved, install it behind the main weight to balance. 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, rotation stopper (M3) Protective tape ※ A scale is not included. ※ Please ask for details in the comments. If you do not have a sub-weight, Please take this opportunity to try it. Also for sale: Fidelity-Research FR-54 weight weight W-180 manufactured product