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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Readytosky® 2212 920KV Brushless Motors CW CCW for F330 F450 F550 S500 S550 X525 DJI Phantom Quadcopter(4PCS)

Product ID: 144502009

Details

Brand
Readytosky
Model name
f450 f550
Product dimensions
28W x 24H
Speed
920 RPM
Voltage
12 Volts

🔇Low noise & ultra-stable performance

🔌3.5mm bullet connectors for easy plug & play

⚙️920KV high-speed brushless motor

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Description

🚁 Elevate your drone game with power, precision, and silence.

PRECISION POWERHOUSE - 920KV brushless motors deliver smooth, high-efficiency thrust for pro-level flight control.
WHISPER QUIET FLIGHT - Engineered for minimal noise, so your drone soars silently and impressively.
BALANCED CW CCW SET - Includes both clockwise and counterclockwise motors for perfect quadcopter stability and control.
PLUG PLAY SIMPLICITY - 3.5mm bullet connectors eliminate soldering hassle—get airborne faster.
UNIVERSAL COMPATIBILITY - Fits popular DJI Phantom frames like F330, F450, F550, S500, and more—upgrade without limits.

The Readytosky® 2212 920KV Brushless Motors set includes 4 high-performance motors (2 CW, 2 CCW) designed for DJI Phantom-compatible quadcopters such as F330, F450, and F550. Featuring a 920KV rating, low noise operation, and convenient 3.5mm bullet connectors, these stainless steel motors provide reliable, stable thrust and easy installation for professional-grade drone enthusiasts.

Specifications

ASIN	B075DD16LK
Best Sellers Rank	516,134 in Toys & Games ( See Top 100 in Toys & Games ) 1,142 in Remote & App-Controlled Helicopters
Brand	Readytosky
Customer Reviews	4.3 4.3 out of 5 stars (240)
Item Dimensions W x H	28W x 24H millimetres
Item Weight	191 g
Manufacturer	Readytosky
Manufacturer Part Number	(B46+B48)*X
Material	Stainless Steel
Model Name	f450,f550
Model Number	(B46+B48)*X
Speed	920 RPM
Voltage	12 Volts

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Fantastic experience overall. Will recommend to friends and family.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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$103.92

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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