What size are rhe bullet connectors? 2 mm???

Dear,it's 3.5mm bullet connectors.

what size mounting screws do you use to mount these motors to the frame arms?

M39 M3 Hexagonal Hex Screws 9mm

What size Nuts do these motors use to hold on the props?

Dear,the size of Nuts to hold on props was M6 size.

None of the props I've tried work with this without modification. 1045 is a good size but the axle has flats and is ~8mm in diameter. Are there any?

You can have a try 1045 Self-Tightening Propellers: https://www.amazon.com/RAYCorp-Self-Tightening-10x4-5-Propellers-Pieces/dp/B07H1HXCGJ/ref=sr_1_12?keywords=1045+props&qid=1562035838&s=gateway&sr=8-12

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2212 920KV Brushless Motors CW CCW for F330 X525 F450 S500 F550 S550 ZD550

Product ID: 46589035

Details

Brand
Readytosky
Model Name
f450 f550
Product Dimensions
1.1"W x 0.94"H
Speed
920 rpm
Voltage
12 volts

⚡920KV high-speed brushless power

🔇Low noise, smooth flight

🔌3.5mm bullet connectors, no soldering hassle

55879CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your drone game with power, precision, and zero noise!

WHISPER QUIET FLIGHT - Experience ultra-stable, low-noise motors that keep your drone stealthy and smooth.
PRECISION ENGINEERING - Durable metal build with a 12mm shaft diameter ensures reliable, long-lasting power.
PLUG PLAY CONVENIENCE - 3.5mm bullet connectors eliminate soldering, saving you time and frustration.
VERSATILE COMPATIBILITY - Perfectly engineered for popular quadcopters like F330, F450, F550, S500, S550, and DJI Phantom.
OPTIMIZED PERFORMANCE PAIRING - Recommended to pair with 1045 propellers for maximum thrust and efficiency.

The Readytosky 2212 920KV Brushless Motors (4PCS) deliver high-speed, low-noise performance tailored for top quadcopter models including F330, F450, and DJI Phantom. Featuring easy 3.5mm bullet connectors for quick installation and a robust metal design, these motors promise stable, efficient flights. Ideal for professional drone enthusiasts seeking reliable power and hassle-free setup.

Specifications

ASIN	B075DD16LK
Best Sellers Rank	#137,978 in Toys & Games ( See Top 100 in Toys & Games ) #151 in RC Electric Motors
Brand	Readytosky
Brand Name	Readytosky
Customer Reviews	4.3 out of 5 stars 251 Reviews
Item Dimensions W x H	1.1"W x 0.94"H
Item Weight	6.72 ounces
Manufacturer	Readytosky
Material	Metal
Material Type	Metal
Model	(B46+B48)*X
Model Name	f450,f550
Part Number	(B46+B48)*X
Product Dimensions	1.1"W x 0.94"H
Shaft Diameter	12 millimeters
Speed	920 rpm
Voltage	12 volts

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55879CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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3 weeks ago

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