Weldtite: Weldtite manufacture the worlds most comprehensive and innovative range of bicycle maintenance products. Weldtites own in-house design and quality control team design all their products alongside a team of expert bike mechanics, working to the ISO 9001 standard which ensures all of the product range is made to a consistently high quality.This set of 2 Handlebar Head Plugs are made from high-quality, sturdy plastic and conform to Weldtites incredibly high standards.