【Compatible with】 Replacement for Models :HD77-72, 5865 Power Saw, HD77 (F012HD77LA) , HD77 (F012HD77LA) , HD77M (F012HM7700) , HD77M (F012HM7700) , HD77 Type 17, HD77M (F012HM7702),HD77M-72 (F012HM7772) , SHD77-72 7-1/4", 5825 TYPE 2 (F01258250A), SHD77 (F012SD7700) , SHD77 (F012SD7705), SHD77M (F012SD7702), SHD77M (F012SD7707).Replacement for Bosch Models:1677C-100 (0601677168), 1677C-100 (0601677168), 1677DC-100 (0601677190), 1677DC-100 (0601677190),1677MDT (0601677239) 【Durable Materials】 Made from durable materials, this replacement blade nut bolt is built to withstand the rigors of heavy-duty use. The robust construction ensures long-lasting performance and reliability, even in demanding work environments 【Easy Installation】 Installing this blade nut bolt is quick and straightforward. Simply remove the old bolt and replace it with the new one. No special tools are required, and you can have your circular saw back in full working order in no time 【Increased Safety and Performance】 The blade nut bolt ensures that the saw blade is securely seated during operation and provides consistent and reliable performance 【Includes】 Blade Bolts x 4