Are the back side of the toothrush heads made of hard plastic or a softer material like Sonic Care toothbrush heads?

They are hard plastic. I’ve used the Sonic Care replacements for years, paying about $26 for one pair. IMHO these are just as sturdy @ &16 for 6.

Does this fit HX3411/04?

Yes, these replacement heads fit Phillips Sonicare HX3411/04 toothbrush.

Is this brand compatible with Pursonic S450 electric toothbrush?

No, these replacement brush heads only compatble with Philips Sonicare click-on toothbrush handles.

Compatible with the models sold at Costco? HX686W, HX686P

Yes, they fit Philips Sonicare HX686W and HX686P eletric toothbrush handles.

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BrightDeal Replacement Heads for Philips Sonicare ProtectiveClean 4100 5100 6100 DiamondClean 9500 ExpertClean 7500 FlexCare HealthyWhite Electric Sonic Toothbrush C3 G3 W3 C2 G2 Brush, White, 6 Pack

Product ID: 382907895

Details

Age Range (Description)
Adult
Brand
Brightdeal
Color
White
Material
Nylon
Size
1 Count (Pack

⚡10X plaque removal power

🔄3-month color-fade replacement reminder

🛡️End-rounded bristles for gum protection

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VT5790

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In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your smile game with BrightDeal – where tech meets total oral care!

HYGIENIC TRAVEL READY - Includes protective caps to keep your brush heads pristine and dust-free on the go.
UNMATCHED COMPATIBILITY - Fits seamlessly with all major Philips Sonicare series for effortless upgrades.
10 X PLAQUE REMOVAL POWER - DuPont bristles engineered to blast away plaque far beyond manual brushing.
SMART REPLACEMENT REMINDER - Color-fading bristles signal when it’s time to refresh your brush head—never miss a swap.
GENTLE ON GUMS TOUGH ON PLAQUE - End-rounded bristles safeguard sensitive gums while delivering a deep clean.

BrightDeal 4406W replacement heads deliver professional-grade cleaning with DuPont bristles that remove up to 10X more plaque than manual brushes. Compatible with a wide range of Philips Sonicare models, these heads feature color-fade indicators for timely replacement and hygienic caps for storage. Designed with end-rounded bristles, they protect gums while ensuring superior oral health.

Specifications

ASIN	B09L88473N
ASIN	B09L88473N
Age Range Description	Adult
Best Sellers Rank	#3,523 in Health & Household ( See Top 100 in Health & Household ) #16 in Electric Toothbrush Replacement Brush Heads
Brand Name	Brightdeal
Bristle Material	Nylon
Color	White
Compatible Devices	diamondclean,philips sonicare
Customer Reviews	4.4 4.4 out of 5 stars (4,997)
Date First Available	November 8, 2021
Item Firmness Description	Soft
Item Form	ROUND
Manufacturer	BrightDeal
Manufacturer	BrightDeal
Material Type	Nylon
Model Name	DiamondClean
Number of Items	6
Number of Pieces	6
Product Dimensions	4.61 x 3.74 x 0.98 inches; 2.01 ounces
Size	1 Count (Pack of 6)
UPC	740030404996
Unit Count	6 Count

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