The smooth side provide slight lateral guiding, and also prevents the bit being pulled through the mouth. Feature: Flexible snaffle with copper link to relax the horse jaw. 2.5in O-rings are made of top stainless steel. Smooth edges to protect the teethes of the horse. Encourage mouthing for easy control. Specification: Material: Stainless steel + Copper Length: 105mm / 115mm (optional) Weight: 222-234g / 7.8-8.2oz Package weight: 225-238g / 7.9-8.4oz Package List: 1 * Horse Mouth Bit Shipping: 1.We guarantee to ship goods out within 24-72 hour after payment confirmation except holiday. 2.We ship by China post,HKpost EMS,DHL,Fedex,according to your choice when placing orders . 3.If you didn't receive the item after 45 days,please feel free to contact us.We will make all our effort to resolve the problem. 4.We are not responsible for delays causedby the customs,Import duties,taxes or other customscharges. 5. Due to stock status and time differences, we will choose to ship your item from our first available warehouse for fast delivery. Warranty: 1.All items have 1 year guarantee.IF your purchase do not meet merchantable quality, fitness for purpose or match the description, We can make sure your issues are resolved . 2.For wrongly-shipped items, Please contact us in 48 hours after delivery.We will arrange to deliver the correct items or return all your payment. 3.For defective or faulty products,please take photos or videos,we would resend or refund after confirmation.