100% New, never mounted. Front Sprocket: 20CrMnTi steel, galvanized, 23 tooth. Rear sprocket : 55# steel, galvanized, 48 teeth. Chain: 45Mn alloy steel, 530/120. Free chain adjuster for you, High quality and newly updated kit. A complete set of chain drive tools to meet your various needs. The X-ring oil seal chain has strong tensile strength and good mute effect. This chain is wear-resistant and has a long service life, and is suitable for high-speed movements above 250km/h. Belt Guard modification may be required for some new models. Chain breaker may be required. 1pc 23 tooth front sprocket. 1pc 48 tooth rear sprocket. 1pc Chain Breaker Tool Remover. Due to different time zone, Pls forgive us maybe we couldn’t reply you as quickly as you expected. We will not accpet mark ” gift” on the packge.