Welcome to the "ZTTO Official Store"! Item Name: Handlebar Stem Material: 6061 Aluminum Alloy Size Details: A(25.4mm x 90mm): 10cm x 3cm x 4cm/3.94" x 1.18" x 1.57" (Approx.) B(25.4mm x 110mm): 12cm x 3cm x 4cm/4.72" x 1.18" x 1.57" (Approx.) C(25.4mm x 130mm): 14cm x 3cm x 4cm/5.51" x 1.18" x 1.57" (Approx.) D(31.8mm x 90mm): 10cm x 3.5cm x 4cm/3.94" x 1.38" x 1.57" (Approx.) E(31.8mm x 110mm): 12cm x 3.5cm x 4cm/4.72" x 1.38" x 1.57" (Approx.) F(31.8mm x 120mm): 13cm x 3.5cm x 4cm/5.12" x 1.38" x 1.57" (Approx.) Because of beautiful appearance, it is unique, practical and personality. This product is easy to install and use, and holds bar securely due to its lightweight structure. Made of high-quality aluminum alloy material, the stem is more durable. There are 6 specifications for you to choose from 25.4mmx90mm, 25.4mmx110mm, 25.4mmx130mm, 31.8mmx90mm, 31.8mmx110mm, 31.8mmx120mm. It is suitable for outdoor riding. Notes: We are specialized in selling bicycle accessories, if you have a need, remember to pay attention to us! The caliber of the front fork of the two handlebar locks is 28.6MM. The difference is that the caliber of the handlebar is locked. One is 31.8MM and the other is 25.4MM. Due to the light and screen setting difference, the product's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Handlebar Stem