Material: Metal C166: Outside Diameter:1/2" or 13mm,Inside Diameter:0.43" or 11mm C167: Outside Diameter:5/8" or 15mm,Inside Diameter:0.5" or 12mm C168: Outside Diameter:3/4" or 20mm,Inside Diameter:0.67" or 17mm C169: Outside Diameter:1" or 25mm,Inside Diameter:0.85" or 22mm C170:Outside Diameter:1 3/8" or 35mm, Inside Diameter:1.25" or 32mm C171: Outside Diameter:1.5" or 38mm,Inside Diameter:1.31" or 33.5mm Quantity: 100 Pcs Use for Straps, Bags, Purses, Belting, Ribbon and so on ***************************** ---------------------------------- Shipping : We will ship your items as soon as possible. Please ensure the shipping address you attached is correct. This is international shipping ! Shipping usually cost 12-18 working days ( 2-3weeks) by Airmail from post office. Or you can contact me to upgrade shipping to Express which can arrive in a week. I always ship it on time but please allow 5-10 days delay, sometimes there is a delay because of the delay in Customs. ***************************** ---------------------------------- Payment method: The Paypal is only available. ***************************** ---------------------------------- Communication If satisfied by our products,please give us the constructive feedback. Your feedback will be one of the most valuable things to us. If not satisfied about our products or needing more information, please feel free to e-mail to us.