PİTBULL Instructions for use After placing the strap lock on the strap pin of your guitar, put your strap on it. Then press the Pitbull rubber lock firmly onto the strap. This prevents the strap from coming off the pin and allows you to carry your guitar safely. Compatible with all acoustic, electric and bass guitar pins. No tools are required for installation. Can be easily applied by hand. Store in a dry and cool place. Protect from prolonged direct sunlight. Hobby