• Patented bit holding system forces bit surface to opposing side for maximum bit retention - strength
• Packaged in patented impact resistant "slide rail" system
• Heat treated socket bases for durability and service ability
• Chrome sockets; S2 and alloy steel bits
• Includes 6mm, 8mm, 10mm, and 12mm Bit Sockets
• 4 Piece 3/8"; Triple Square Metric Bit Socket Set includes: 6mm, 8mm, 10mm, and 12mm Bit Sockets packaged on a clip rail.