Thank you for choosing Aerospace-Aviation360 for Part Number RFS1055 by Sabreliner for model Sabreliner 40, 60, 65 which is described as Rotating Disc . This is an ASAP Semiconductor owned and operated website. We are a leading supplier of aircraft Corporate Brake parts like RFS1055. You have 24/7 x 365 access to our diverse product database with the fastest lead times in the industry.