Features and Benefits:�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-stamped 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 engagementWiha crafted Professional Series Sockets and Ratchets are engineered with Wiha premium-quality tool steel for strength and durability with a Chrome-plated satin finish for corrosion protection. Professional Series Sockets Wiha"s Professional Series 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. Professional Series Ratchets Wiha"s Professional Series Ratchets feature a classic 72-tooth ratchet system with 5° arc swing for smooth ratcheting in tight spaces, 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. Professional Series Extensions Wiha"s Professional Series 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. Wiha premium quality Professional Series Socket and Ratchets are designed and engineered by Wiha Germany. You can buy with confidence knowing that Wiha stands behind our products with what we believe is the best No Hassle Guarantee in the industry.