Specification: Diameter conversion: positive 10mm positive 8mm. Reduce or increase thread size to allow mounting on 8mm or 10mm applications. Male Side: 10mm x 1.25 Female Side: 8mm x 1.25. Available with black or chrome finish. Male Side: 10mm x 1.25 Female Side: 8mm x 1.25 Total Length: 2.5cm THIS IS NOT FOR YAMAHA REVERSE THREAD!! Features: * Works fine, save money * High quality and durable * Low cost, competitive price * Low emission, environmental friendly * Perfect performance, increase security * Good working condition and easy to Install Package Include: 2pcs(right) as pictures shown Please Note: 1.Due to the light and screen difference, the item's color may be slightly different from the pictures. 2.All dimensions are measured by hand, there may be small deviations. 3.This Is Aftermarket Replacement Item But Not Genuine. 4.Please check your correct replacement parts before purchase, the picture show more detail, thank you.