6 Brand new never opened 345 ml or 12oz bottles of Bi Tron XL2 optimum 2 stroke metal treatment. compatible with all 2 stroke applications. improves power output, compression and efficiency, reduces friction and operating temperatures, cleans and protects your 2 stroke engine, optimizes performance, prevents wear and improves cold starts. each bottle retails for $40 + tax $10 each, firm.