1955-57 Chevrolet used original left vent window regulator. Handle splines good and works perfectly. Still has gear centering cap in bottom that 90% are missing.Please email us with questions. We are a full time business and get very busy at times. We will try to answer your emails as soon as possible. We ship Fed Ex and USPS Priority mail. All international sales will incur a $10.00 handling fee plus shipping charges. Buy with confidence, we have been in business for over 35 years, we are honest, straight shooters, ask anyone who has bought from us or check our feedbacks. Please visit our eBay store at: http://stores.ebay.com/chevresto . We are a complete Chevrolet restoration parts facility, specializing in 1955-57 Chevrolet’s, 1964-72 Chevelle’s and 1967-69 Camaro’s. We provide on online catalog, bumper rechroming and vent window restoration service. Email us your address and we’ll send you our complete line card. Click on the store logo or find us on the internet at East Coast Restorations for more information on our company. Thanks for looking.