The Milwaukee 11PC 3/8 Drive Metric Hex Bit Socket Set with FOUR FLAT sides is designed from the ground up to be part of the most versatile socket family. Milwaukee bit sockets feature an innovative design with four parallel flat sides, which deter rolling and are wrench-compatible. This also creates a slim profile to provide the best access in tight spaces. The one-piece socket design offers improved durability compared to two-piece designs by eliminating the risk of the bit separating from the socket base. This set includes a storage rail for better organisation. Laser engraved size markings provide easy identification and chrome plating offers rust and corrosion protection. All Milwaukee bit sockets are backed by a Lifetime Guarantee. Most Versatile Sockets. Anti-Roll, Wrench-Ready. FOUR FLAT Sides feature wrench-ready design More Durable - One Piece Socket Chrome Plated Storage Rail Included FOUR FLAT Sides deter rolling Best Access - Slim Profile Laser Engraved Markings For Easy Identification Rust Resistant Includes 1 x 3/8 Drive 4mm Hex Bit Socket 1 x 3/8 Drive 5mm Hex Bit Socket 1 x 3/8 Drive 6mm Hex Bit Socket 1 x 3/8 Drive 7mm Hex Bit Socket 1 x 3/8 Drive 8mm Hex Bit Socket 1 x 3/8 Drive 9mm Hex Bit Socket 1 x 3/8 Drive 10mm Hex Bit Socket 1 x 3/8 Drive 11mm Hex Bit Socket 1 x 3/8 Drive 12mm Hex Bit Socket 1 x 3/8 Drive 13mm Hex Bit Socket 1 x 3/8 Drive 14mm Hex Bit Socket