[DETAIL] Brand new and high quality Spring Steel Flexible Post Extensions Material: chrome vanadium steel spring steel Size: 1/2, 3/8, 1/4 Scope of application: The product is suitable for various scenarios, automobiles, bicycles, various mechanical maintenance, etc. Interface: 1/4 inch: 0.625cm/0.25" (Approx.) 3/8 inch: 1cm/0.39" (Approx.) 1/2 inch: 1.25cm/0.49" (Approx.) Notice: 1. The real color of the item may be slightly different from the pictures shown on the website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Thank for your understanding. 3. 1cm=0.39''. Package Included: 1x Post Extension Rod [ATTRIBUTES] - Hign-concerned Chemical: None - Origin: Mainland China - Hign-concerned Chemical: None - Origin: Mainland China