Review pictures. Some of the parts are new old stock. Some are open box and or used. The sizes are the depth of the plug inserts. They are all 14MM internal thread and the same external thread. These install with the K-D tools no 2124 provided. Comes with 3 extra 3/8 depth plugs. k-d tools is now gearwrench. Comes with the instructions as well. The plastic covers tabs are broken on the one side and it has a crack in it. Sold as is. Some of the inserts have some surface discoloration on them and need to be cleaned off