397 Transmission Line Fitting Tube Adapter 5pcs Used to connect clear tubing to the transmission cooler in order to flush the transmission and works perfectly for GM vehicles For GM 1996 and later Snap-in Style Push or Clip Oil Lines Connection Fitting Size: 3/8' A must have for transmission cooler installation. Saves the pain of cutting the line and makes it look like a nice clean install Please carefully review the product size before purchasing Package included: 5pcs Adapter