Large Diameter Gas Lens Collet Body, 1 8 in, Used on 18, 26, 17, 17V, 18P, 26V Torches no checkout Built in bumper reduces shock Built in bumper reduces shock when blade is retracted Rounded case fits your hand for comfort Graduations printed in fractions and decimal equivalents Positive toggle lock holds blade securely at any length Durable ABS case withstands rugged use on the job site These wheels are precision machined from high grade steel Engineered for long life and maximum cutting accuracy Virtually eliminates turbulence in the gas shielding stream as it emerges from the nozzle Long stable stream allows the electrode to be extended farther beyond the end of the nozzle for improved visibility of the weld zone