SKU: SP21320 Universal Joint 1/4" Dr - SP Tools SP Tools 1/4" Dr Universal Joint The SP high performance range of Sockets and Accessories are designed to incorporate the needs of professional tradesman. Chrome vanadium steel for high durability (CRV)  Flat drive technology to maximize grip  Quick release system for easy socket changes  Cushioned grip handle for operator comfort  Specially strengthened ratchet gear teeth to sustain maximum applied torque. Read more