Features: Premium Quality: It is made of vanadium steel and has been heat treated with black oxide coating. Product size: the kit includes various adapters and reducers. It has good performance in withstand normal compression torque. It will add excellent versatility, including the following conversions and sizes, from 3/8" to 1/4", 1/2" to 3/8" diameter reduction, 1/4" to 3/8" adapter, 3/8" adapter" to 1/2"., Unique design: provides more flexibility for sleeves and drive tools, and maximize the versatility of ratchets and sleeves. The spring mounting ball provides the plug securely through the through-hole, allowing the use of locking pins and locking rings., Package Included: 4 inch to 2 inch reducer, 5 inch to 4 inch reducer, 0.2 inch to 0.4 inch adapter, 0.4 inch to 0.5 inch adapter., Ideal choice: This is your best choice when working., Specification: Material: Metal Color: Black Size: Approx. 3/8" 1/4" 1/2" 3/4" Note: 1. Please allow 1-2mm errors due to manual measurement, please make sure you do not mind before ordering. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 1xPneumatic Common