if you want more items,please connect with me to check the detail for you.if you buy more,the price will cheaper more.

shipment:free ship regestered air mail all the world

after your buying ,please leave me a message the color or model you want ,if not ,ship randomly,

This price is 150pcs price,you just buy 1 and i will send 150pcs to you,by the way,please leave a message to tell me which colour you want,if not we will ship random

Name: Thicken anti-leak air anti-tie mouth vital capacity the blowing nozzle FVC test instrument spirometry mouthpiece disposable mouthpiece

Length :about 92.20 mm

Width :about47.03 mm

Height :about 50.14 mm

Neck length: about 12.38 mm

Interface diameter: 9.21 mm

Interface Diameter: 11.66 mm -13.10 mm（diameter interfaces steeled advantages: good compatibility, wide application, butt seal better, more accurate test, diameter about 1 cm in total lung capacity can be used）

Features: Thicken, anti-leak air, anti-tie mouth

If you need mix colors, please leave us a message

Welcome wholesale and custom! All products for Over 500 $ Can be mixed wholesale (mixed the ship will easy cheap). (If order more, more preferential price).

Other countries please contact the seller consult detailed shipping prices
Welcome to wholesale or Customize

we are the professional sports` goods shop.

Shipping:

1. If you address is unconfirmed we are not to be held responsible for it. It is very safe door to door service, most countrys never get problem with customs. (Please leave your phone in order to let the mail staff connect with you) if your address is belonged to the "other country", please connect with me to know about the detail of the ship cost.
2.in normal, the chinese air mail is about 9-18 business days. But it may be about 45days, if there is the customs problem or your address is a remote place, or your country post office need more time to send the mail .
3.in normal, the EMS air mail is about 7-15 business days, but it may be about 30days, if there is the customs problem or your address is a remote place, or your country post office need more time to send the mail .
4.for the chinese air mail, it is not received after about 18bussiness days, for the EMS air mail, it is not received after about 13 bussiness days, please connect with us, let us to ask the chinese post office to check the detail . i am very sorry to cause your inconvenience, thank you

 Our business Guarantee

1.Buyer is able to return it within 7 days if you don`t like it. Buyer must contact us within 7 days from the date of delivery to get Return Authorization before return the item otherwise the return will be rejected.
2.Shipping !#!amp!*! handling is non-refundable.
3.Buyer pays return shipping.
4.To request a return please contact us
5.All returns must accompany the original packaging and include all accessories which accompanied the  shipment. We reserve the right to reject any returns if the proper guidelines are not followed.