After 15 years of hard use my IR 2131 impact wrench finally broke, the corners of the anvil rounded off. Got the rebuild kit, installed it in about 10 minutes. Worked great, the only problem was my fault, I failed to pre-lube the anvil where the hammers hit. After several minutes of use it started jamming up. A quick disassemble and thick coat of IR grease and she was back up and running great. I expect another 15 vyears or more out of it! BTW, the kit picyured is a generic kit from IR's website, the 2131-THK1 kit fits the IR2131 with normal length anvil and is different from the picture.It worked great , some tool guy told me you could no longer buy this , like this ! But he was just trying to sell me the whole gun . I glad I looked for myself Thanks R/TThe picture is generic and doesn't show all the parts. There are 2 different anvils available.Small and large diameter shafts. This kit covers them both because the nose bushing comes in the kit. Also not shown is the 2 hammers.great kit easy to rebuildThe diagram and information provided me with the necessary information to make sure I was ordering the correct parts. I was very pleased with the notification of the order and delivery of these parts.