Features:- Made of premium CR-V chrome vanadium steel, high hardness and good toughness.
- Corrosion-resistant chrome plated, not easy to rust.
- Ideal tool for mechanics, engineers, carpenters or DIY enthusiasts.
- Allow you to mix and match drive sizes for your sockets, ratchet handles, extension bars and other accessories.

Four Sizes:
- 1/2 inch square hole to 3/8 inch square head, 36mm length.
- 3/8 inch square hole to 1/2 inch square head, 35mm length.
- 1/4 inch square hole to 3/8 inch square head, 25mm length.
- 3/8 inch square hole to 1/4 inch square head, 26mm length.
Package weight: 0.077 kg
Product Size(L x W x H): 3.60 x 2.50 x 2.50 cm / 1.42 x 0.98 x 0.98 inches
Package Size(L x W x H): 4.60 x 3.50 x 3.50 cm / 1.81 x 1.38 x 1.38 inches Package Contents: 1 x Drive Socket Reducer Adapter