There are just 16kinds gears on this page, the alternative length is in Group 2 page. Go to Group 2 Size: Reference specification sheet and schematic Loose or Tight with shaft: Tight Material: ABS plastic I even have every kind of gears, Go to Gear world Payment: We settle for all fee as below. Credit card, T/T bank, Moneybookers, debit card. If you've any query about payment,please be happy to contact us. If you've got any problems with payment,you may perhaps get help from this link. http://help.aliexpress.com/pay_order.html Shipping: We will ship out parcels inside 1-3days after fee approved. We use global Economy Shipping, so we don't present monitoring numbers. If you would like a tracking number, it is best to tell me, and pay an extra delivery fee. Please understand! Order placed on weekend or vacation can be shipped out on Monday or next working day. If it is out of stock,we desire a little time to job and we can depart note or messages for that. We do not pay for the customs tax charged from local customs. Delivery time only for reference.It may be quicker or slower sometimes.As it isn't very steadily shipping by way of China Post Air Mail.We will job each parcelss. The approximate shipping time to diversified nations under is only for your information only, which is estimated, no longer guaranteed. 1: USA: 10-39 operating days. 2: RU: 15-55 working days. 3: Europe country: 15-55 operating days. 4: Other countries: 15-55 working days. Shipping ways: We chiefly use China Post Economy Air Mail to deliver your parcel. Replacement/Exchange/Refund: Please test the kit and items carefully after receiving.If any damaged,please tack photographs as proof first.Then you need to touch us for after sale service. Please kindly contact us first if ther is any problems with your order earlier than opening dispute.Thanks for your realizing and support.We will clear up till making every single customer convinced in a reasonable way. If you don't receive parcel inside guarantee time,please kindly anticipate more time.Your parcel could also be not on time by vast parcels for post,so they process slowly than normal. Feedback: Your feedback is awfully very important for our store.So please contact us directly before leaving destructive feedback if there something make you are not convinced or angry.We will attempt to resolve concern till you are satisfied. If you're satisfied with our store.Please depart a positive feedback.And useful comments for other customers. Item as describes:5 stars communication:5 stars Shipping Speed:5 stars
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