For sale: 4x Torx Head Stem Screws for Hiboy KS4 and Pro Electric Scooters. These are the Handlebar Stem screws. You will get 6 screws. Black color. You will need a Torx security bit to install these screws. You can buy this tool by or by pasting the following link into your browser: https://www.ebay.com/itm/395355065516 If your commute is bumpy or is full of pot holes, then you can keeps your screws from vibrating off by adding a strong thread locking fluid to them. You can buy a bottle of the the thread locker fluid by or by clicking the below picture: Thank you for checking out our listings! No local pick-ups. Payment must be made within 2 days. will automatically leave you positive feedback once we receive yours. Refunds will only be given if you received a different item than what is listed. There is no refund if you pick the wrong size or color.