Compatible with Skil | HD5525 TYPE 2 (F01255250A) 6-1/2 in. Circular Saw | HD5550 TYPE 1 (F012555099) 7-1/4 in. Circular Saw | HD5575 TYPE 2 (F01255750A) 7-1/4 in. Circular Saw | HD5575 TYPE 1 (F012557599) 7-1/4 in. Circular Saw | HD5657 TYPE 2 (F01256570A) 7-1/4 in. Circular Saw | HD5657 TYPE 1 (F012565799) 7-1/4 in. Circular Saw HD5660 TYPE 2 (F01256600A) 8-1/4 in. Circular Saw | HD5660 TYPE 1 (F012566099) 8-1/4 in. Circular Saw | 5825 TYPE 2 (F01258250A) 6-1/2 in. Worm Drive Saw | HD77 Type 17 Worm Drive Saw (Skilsaw 77) | HD77M (F012HM7702) 7 1/4" Magnesium Worm Drive Compatible with Skilsaw SHD77 (F012SD7705) 7 1/4" Worm Drive Compatible with Skilsaw | SHD77M (F012SD7707) 7 1/4" Magnesium Worm Drive Skilsaw | HD77M-72 (F012HM7772) 7 1/4" Magnesium Worm Drive Compatible with Skilsaw | 5860 (F012586099) Circular Saw | 5550 (F012X55099) 7 1/4" Compatible with Skilsaw | HD5860 (F01258600A) Worm Drive Compatible with Skilsaw | HD77-72 7-1/4 Worm Drive Saw w/Twist Lock