1. Control valve unit: This product is the control valve unit of Pneumatic Coil Nailer, which is used to control the work of pneumatic systems. 2. Trigger valve TVA6: Contains TVA6 type trigger valve to ensure flexible operation and efficient work of the nail gun. 3.provided to provide multiple spare control valve units and TVA6 trigger valves for easy replacement and maintenance. 4. High-quality materials: Made of high-quality materials to improve the durability and performance of parts. 5.Applicable scene:Maintenance and repair: Used to maintain and repair for Bostitch Max CN55, CN70, CN80 and other models of Pneumatic Coil Nailer to ensure the normal operation of the pneumatic system. Precautions:When replacing parts, make sure the tool is in safe condition Be sure to select the correct model of control valve unit and TVA6 trigger valve to ensure it is compatible with your Pneumatic Coil Nailer. Due to different factory batches, the product words are different, and the product accessories have slight differences in color and appearance, but it does not affect normal use Colour:White&Black Material:glue Package Contents: 5 x CN55CN70 CN80 integrated switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.