I buy this because it be such a good deal . I use for my Skil 77 worm drive see . it barely fit the saw so , if it be eighteen or even twenty inch it would be perfect . I do like it for the shoulder strap . I can carry the heavy saw in the bag over my shoulder and it free up my hand to carry other tool . I keep a couple of extra blade , blade wrench , a spare tape measure and some other necessity in it . make it nice to tote to where I be work . overall a good , heavy duty bag .