This 1/4" driver socket set is multi-functional for use. It's suitable for electrical/industrial maintenance， lab， factory and home decoration use.

Features:
Precise tools with different sizes， fitting for different use.
Made of chrome-vanadium steel， hardening processing， durable for use.
It's has good ability to resist rust.
With 18pcs metric/inch sockets， can be used in different situation.
A metal box is so perfect for storage and carrying.
Wide range of application， suitable for electrical/industrial maintenance， lab， factory and home decoration use.

Specifications:
Material: Chrome-vanadium Steel 
Metric: 4， 5， 6， 7， 8， 9， 10， 11， 12mm
Inch: 3/16"， 7/32"， 1/4"， 9/32"， 5/16"， 11/32"， 3/8"， 7/16"， 1/2"
Spinner Handle Length: 150mm / 6"
Extension Bar Length: 75mm / 3"; 150mm / 6"
Ratchet Handle Length: 140mm / 5.5"
Metal Box Size: 210 * 80 * 42mm / 8.3 * 3.15 * 1.65in (L * W * H)
Product Weight(All Accessories): 852g / 30.08oz
Package Size: 21 * 8.6 * 4.3cm / 8.3 * 3.4 * 1.7in (L * W * H)
Package Weight: 874g / 30.86oz

Package List:
18 * Sockets
2 * Extension Bars
1 * Spinner Handle
1 * Ratchet Handle
1 * Metal Box