We have HeavyDuty YKK + Local Zips for coats, Jackets & many other applications
#10 means 10mm wide Teeth; #8 means8mm Teeth. I have seen #5 (5mmTeeth) Described as "Heavy duty" & I laugh ; Ours are much bigger/ much Heavier duty!!).
The sizes stated as measured "Total Length Of Teeth" with Zip closed ; Not Tape length. See Examples shown.

We are selling Sizes mainly 60cm(YKK) and 24" Local Brand and 28" YKK. As listed.
These are used for Heavy Duty garments such as WaxedCotton Jackets where #5Size zips will break very easily. 
Once you understand this you will understand why ours are best available
Local branded #10 Zips are manufactured to our own exacting standards & compatible with YKK but slightly cheaper. 
We will send as ordered. 

Note colour hues can vary depending on camera. 
Please contact us prior with any queries & concerns

Returns only if misdescribed ; As Sent ( ie as sold & resellable & Unused) with original packaging. 

We have large stocks from our manufacturing division . Bulk enquiries welcome.
Please also view our High End Outdoor clothing range : Search Ebay: Hunter Outdoor

 NB; The international postages costs are based on using Express couriers. 
RoyalMail/USPS/letter post takers much longer & not so reliable. 
If you are happy with ~30days transit then message us with address & we can quote postage

All non UK orders are sent sales tax/VAT free but local taxes maybe payable to carrier
Postages/transit times maybe up to 21 days depending on country & postage system selected
any queries: please ask