USAWELD Gas Diffusers which fit the Eastwood MIG 135, MIG 175, & Eastwood Spool Gun! These gas diffusers are about 1-3/8" long. They have an M8 x 1 left-hand male thread where this screws onto the welding gun. ***Save on shipping by combining purchases of select MIG, TIG, or Plasma parts. However, you must pay for all items with one combined payment for this shipping discount. Separate payments for each item are not eligible for a shipping discount. Go to our store and see all the items we have for sale: https://stores.ebay.com/welders4lessIf you need any other hard to find welder parts that are not listed, send us an e-mail with a digital photo - we might have just what you need. Buy in confidence from HTP America, Inc., your total welding specialist since 1981, where for over 35 years all we have sold are quality welding supplies at affordable prices. Send us a message if you have any questions on our items. S4228