Lokar Billet Aluminum Throttle Pedal with Rubber features the 1955-1957 chevy billet aluminum throttle assembly and has been designed to convert original rod linkage to Lokars modern throttle cable system It is designed to mount in the original firewall location with offset bezel washers to align throttle cable through firewall The throttle pad is spring-loaded like an OEM design The removable lower arm is splined for versatility in mounting to the right or left of the mounting bracket Lokars exclusive upper arm is a one-piece design The shaft and arm are one piece, requiring no pins The outside dimensions of the throttle pedal measures 2 x 5 inches