Cleaning surface condenser tubes of debris can take a toll on you. Thats why you need a tube cleaner gun for your high volume tube cleaning jobs. The patented BSL-50s air assisted trigger requires an incredible 90% less effort for firing projectiles what a difference when you have thousands of tubes to clean! An easy-to-attach, padded aluminum shoulder stock provides added leverage when you need it. There's no bulky pressure gauge on the BSL-50. The simple cleared-tube indicator reliably shows when the projectile has exited the tube. But dont let all this comfort fool you with a flow rate of up to 50 GPM, the BSL-50 Big Shot cleans tubes faster than ever. Use with the BFP-3510 or other tube shooting machines. Patented.