Check the listing for details. Foley (Belsaw) Model 387 Automatic Saw Filer Part - Slide Assembly (read). Condition: Used. Listed at 35.00 USD. Parting out a Foley (Belsaw) model 387 Automatic saw filer. Here is the “slide Assembly” This Assembly consists of all of the parts that make up the slide, including the slide block, both slide rods, slide rod blocks, bushings and screws. I am parting out a fully functioning Model 387 machine, and have many parts left, this assembly came from that machine and is in good clean working order. If you are in need of other parts besides this “horn” be sure to check my other listings. Do not hesitate to contact me if you need a part and cannot find it in my listings. All parts have been cleaned, where possible vacuum sealed, and well packed. Bid/buy with confidence. Here is your chance to fix that model 387 Foley Saw filer that’s been in the shop collecting dust.