Thank you for viewing. This is an NGK racing plug R2556G-8 purchased for an Alto Works. It is new and unused. Compatible models: Alto Works HA36S R06A H27.3〜 Information about this product is as follows: Part number: R2556G-8, Stock No. is 91975. Plug type: Long reach type LKR plug. Size: Mounting thread diameter is φ12.0mm, mounting thread length is 26.5mm, and hexagonal across flats is 16.0mm. Electrode material: Iridium for the center electrode, and platinum for the outer electrode. Terminal type: Integrated type. Please understand that this item has been stored by a private individual. No claims and no returns. Please refrain from purchasing if you are sensitive to such matters. #AltoWorks #HA36S #R06A #AltoTurboRS