Silverline Socket Converter Set 4pce

Amazon

Hardened and tempered chrome-vanadium steel Spring-loaded ball bearing Fully polished and nickel chrome-plated for durable corrosion resistance Supplied on storage rail Contents: 1/4"F x 3/8"M, 3/8"F x 1/4"M, 3/8"F x 1/2"M, and 1/2"F x 3/8"M, Weight: 3.30693393E-4 pounds, Manufacturer: SLTL4

Electrical World

Hardened and tempered chrome-vanadium steel. Spring-loaded ball bearing. Fully polished and nickel chrome-plated for durable corrosion resistance. Supplied on storage rail. Contents: 1/4"F x 3/8"M, 3/8"F x 1/4"M, 3/8"F x 1/2"M, and 1/2"F x 3/8"M

Zoro Tools

Hardened and tempered chrome-vanadium steel. Spring-loaded ball bearing. Fully polished and nickel chrome-plated for durable corrosion resistance. Supplied on storage rail. Contents: 1/4"F x 3/8"M, 3/8"F x 1/4"M, 3/8"F x 1/2"M, and 1/2"F x 3/8"M