Product parameters: -Model: 1/2", 3/8", 1/4" (optional) -Made of 45# steel, with strength and durability. -Type: Socket wrench -Model: 1/2", 3/8", 1/4" -Dimensions and weight: 1/4" 145mm (55g), 3/8" 200mm (150g), 1/2" 250mm (350g), -Wrench shape: Combination wrench -Surface treatment: polished chrome plating -Material: 45#steel -Color: silver Package Included: 1 *Flexible extension rod adapter (optional) Notes: 1. Due to various factors such as display brightness and light brightness, the actual color of the product may be slightly different from the website picture. 2. Please allow a slight deviation between the data and the manual measurement. -Professional tools for commercial or occasional use. -Flexible extension rod set. -Make it easier to tighten or loosen nuts/bolts and other fasteners that are located in awkward locations that are difficult to reach and have limited space for movement. -Tough elastic spring shaft. -It will enter a truly narrow area through a 90-degree bend.