Wiha crafted Professional Sockets and Ratchets are engineered with premium-quality tool steel for strength and durability with a Chrome-plated satin finish for corrosion protection. Wiha's Professional Sockets are available as 6 point - 1/4" drive, 12 point - 3/8" drive, and 12 point - 1/2" drive configurations and feature roll-stamped die markings for clear identification, a knurled band for extra grip, smooth broached and clear-coated openings for added protection against rust and corrosion, radiused corners for preventing fastener head round-off, and four-side detent grooves with beveled rim for easy and secure drive engagement. Wiha's Professional Ratchets feature a classic 72-tooth ratchet system with a 5-degree arc swing for smooth ratcheting in tight spaces, a highly dependable pawl mechanism for slip and skip prevention, a spring-loaded detent retaining-ball for secure socket lock, and a push-button quick release for rapid socket exchange. Wiha's Professional Extensions are available in 3.0", 6.0", and 10.0" OAL and feature roll-stamped die markings for clear identification, a knurled band for extra grip, a beveled drive end for smooth socket engagement, broached and clear coated openings for protection against rust and corrosion, radiused interior drive corners for reduced stress concentrations, and a spring-loaded detent retaining-ball for secure socket lock. 72 tooth ratchet system with 5° arc swing for smooth ratcheting in tight spaces Highly dependable pawl mechanism for slip and skip prevention Spring-loaded detent retaining ball for secure socket lock Push button quick release for rapid socket exchange Roll-stamp die markings for clear identification Knurled band for extra grip Broached and clear-coated openings for corrosion and rust protection Radiused corners for preventing fastener head round-off Four-side detent grooves with beveled rim for easy and secure drive engagement Beveled drive end for smooth socket engagement Radiused interior drive corners for reduced stress concentrations Wiha premium-quality tool steel for strength and durability Chrome-plated satin finish for corrosion protection Backed by the Wiha No Hassle Guarantee