We offer a variety of PET bottle preforms in different sizes and neck finishes to suit your needs. Preform sizes range from 9.2 gm to 39 gm, with neck diameters of 25 mm and 28 mm. We also provide preforms with a T.S.T neck finish. For your reference, here are some mold numbers associated with specific preform sizes: k866 (39 gm, 29/35 mm neck), k755 (25 gm, 28 mm neck), and k170 (14 gm, 25 mm neck)attis, pulvinar dapibus leo.