Flank Drive® 21mm Metric 6-Point Deep Swivel Impact Socket with 3/8" Drive

Characteristics
• Snap-on® sockets that utilize the Flank Drive® system clamp the fastener on the flanks/flats, providing between 15% and 25% more turning power.
• The pin collar was eliminated with a new patented pin welding process.
• The laser-welded pivot pin reinforces the bushing wall and allows 30° of smooth, uninterrupted action for efficient power transfer at any angle and greater accessibility in confined spaces
• Manufactured from special alloy steel and heat-treated for optimal strength and durability
• Designed to withstand today's high-torque impact wrenches for removing stubborn fasteners. Specifications: Dimension E, Hex Depth, mm 12.4; Dimension C, Bolt Clearance Depth, mm 45.2; Country of Origin: USA; Dimension D, Assembly Length, mm 92.2; Dimension A, Hex OD, mm 29.2; Dimension B, Square Drive OD, mm 26.0; Size, mm 21; Style: 6-Point Warranty; Lifetime Warranty; Non-repairable, with warranty of materials and labor/while the purchaser owns the tools; OEM: GM®, Chevy®; Application Information: Perfect for exhaust bolts on GM® 5.3 and 6.0 L engines, such as the latest Chevy® and GM® Suburbans and trucks; Warnings: For complete warning information, see pages W1-W4 of CAT1600.