USA Mower Blades2 BD18BP Low Lift Mulching Blade Replaces Black & Decker 90548199 Length 17 1/2 in. Width 1-3/4 in. Thickness .150 in. Center Hole 1 in.

The 10 y.o. Multiple time resharpened Blade just ‘wasn’t cutting it’ anymore. Found this on a Google search, found it to match dimensions (length, width, hole size). Two blades came packed well (be careful because they’re very sharp). Took 5 minutes to get old blade off & one of new ones on. New blade is definitely thinner than old but fits fine. Now mowing takes 1/2 the time. I’m very happy.

Original blade for the B&D LM175 was discontinued, so opted for these - with an added bushing to bring the hole size down to 7/8". Fits just right and tried it out today... cuts great. Made in USA too for added bonus.

This is an edit from my earlier review. The blades do NOT fit every B&D MM1800 out there - it seems some models use blades with a 1" hole, and some with a 7/8" hole. I contacted the company who was kind enough to RSA the blades so I could return them.If you've got a mower that uses an 18" mulching blade with a 1" mounting hole, these should do a decent job for you - and it's a good price for two of them.For what this is worth, shop carefully if you have a B&D MM1800 Type 2. That's my model - and even Black and Decker can't tell me if the blades they sell will fit my mower. Looks like it is out into town for a visual hunt, I suppose.

If you own one of the old Black & Decker electric mowers (model MM675) like I do you probably can NOT find a replacement blade with the correct hole diameter (7/8").This blade is an almost perfect replacement except for the hole, which is 1" diameter. As is, you CAN'T use this blade on the B&D MM675 mower because it will NOT remain centered when spinning and will become unbalanced. This will make your mower shake tremendously (=dangerous!!!).To prevent this, you need a reducing bushing (basically a metal ring) to FILL the the GAP between the hole and the plastic fan body. I purchased this metal bushing that reduces from 1" to 7/8" diameter: https://www.amazon.com/gp/product/B00004RK8F/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1Here is an alternative: https://www.amazon.com/gp/product/B000P4OCK0/ref=ox_sc_saved_title_1?smid=A1WO0LWTFI0BL8&psc=1Another lesson learned which I will share: When I removed the old blade, I noticed that the blade sits on a round plastic fan. When I removed the plastic fan, I noticed that six of the eight fan blades were missing (broken off). There is actually a warning on the fan body to not operate the mower without the fan...which, in essence, I was doing with all the missing fan blades. A functioning fan probably helps keep the motor cool and also helps keep the cut grass suspended in the air stream for proper mulching (which it was not doing very well for some time).You can buy a replacement fan and here is the one I purchased (but there are other sellers).https://www.amazon.com/gp/product/B010C7AI7A/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1I hate throwing away good equipment if I can fix it and this B&D mower has been awesome. Many thanks to all the suppliers out there who continue to make parts for our old equipment!Good Luck!

Easy to install, it took me about 10 minutes total. These blades have a 1-inch center. My old blade had a 7/8 inch center. I fixed that problem with a 1 and 3/8 inch wide washer that has a 7/8 inch center. Works great. Blades seem to be well-made, durable and hopefully they'll last for a long time.

Purchased this for my older electric lawn mower as the original part is no longer available. Black and decker directed me to this part but sadly it vibrated a lot more than the original and will probably damage the motor being unbalanced.Cuts the grass okay but doesn't seem to fit my mower like oem.

I measured my mower's shaft. It's 5/8". These blades have a 1" hole. I went to Lowes, and in one of the hardware drawers, they have Machine Bushings. I bought the ones that are 5/8" on the inside and 1" on the outside. They come in a pack of 2 for 89 cents. When I got to the register, it rang up 98 cents. Lowes has the wrong price, but I didn't have time to argue with the cashier over 9 cents.I went home, put one of the bushings in the hole of the new blade, and everything works perfectly!

Service/shipping was very fast - but item is the wrong blade for my mower…Need to return/exchange..