How many teeth on the spline? 26 or 28?

26 spline -- if you are planning to install on a Miata, the rear hubs are the same for all Miatas 1990-2005, regardless of engine, including the 2004-2005 MSMs (which had a different spline count for the inner shaft & differential).

How long is the warranty, 90 days? or 12 months? or 3 years? Why do you have to "request" warranty? Why isnt that simply just put in the info??

Dorman provides a limited lifetime warranty on these parts. A warranty exchange is the responsibility of the seller, please see link below to Amazon's policy on automotive items. https://www.amazon.com/gp/help/customer/display.html?nodeId=15015721#GUID-7AE4D2C8-CAF9-465E-A54A-2D1C166C9385__GUID-11346DD4-FD9C-4D9F-92A7-DC70907DD149 These are Made in China

Why do you have to request a warranty, it takes extra time, you dont get the correct information, and where is it really made, taiwan or china?

Not sure, it's not here and I didn't look

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Specifications

Material	Alloy Steel
Thread Size	RM
Exterior Finish	Machined
Color	Black
Metal Type	Alloy Steel
Brand	Dorman
Item dimensions L x W x H	6.5 x 6.3 x 4.3 inches
Item Weight	3.05 Pounds
Thread Type	Unified National Coarse
Inside Thread Size	M12
Thread Style	Right Hand, Coarse
Thread Class	Coarse
Size	Onesize
Compatible groove diameter	14 Millimeters
UPC	019495213314
Global Trade Identification Number	00019495213314
Manufacturer	Dorman Products
Model	ACCESSORIES
Item Weight	3.05 pounds
Product Dimensions	6.5 x 6.3 x 4.3 inches
Country of Origin	USA
Item model number	930-550
Is Discontinued By Manufacturer	No
Manufacturer Part Number	930-550
OEM Part Number	B01A 33 060 A; F1CZ-1104-B
Hollander Number	538-58520
Bolt Pattern (Number of Holes)	4

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