LOK-ON Extension Bars are designed to allow access in difficult to reach areas with the added LOK-ON features. LOK-ON extension bars include a quick release coupler to hold the socket or accessory securely. LOK-ON extension bars can be used as either a conventional straight bar or as a wobble bar providing 10o of wobble for easier access. LOK-ON extension bars feature a hex nut end that allows for the application of a wrench if additional torque is required. LOK-ON extension bars are Manufactured from High Quality 6140 CRV LOK-ON Quick Release Couplers are Manufactured from a Higher Quality 8660 CRV. Mirror & machine satin finish for Corrosion Protection, with knurled 'quick release' for easy grip.