https://joy.videvo.net/videvo_files/video/free/2019-02/large_watermarked/181004_03_Contructions-Repairs_21_preview.mp4 Construction Worker Tightening Bolt Builder tightening a bolt on a piece of machinery at a building site. 1080pboltbuilderbuildingbuilding siteconstruction siteequipmentfixingmachinerymaterialsrepairsspannertighttighteningtooltoolsworkerworkmanwrench