ITEM NAME:3Pcs Impact Socket Adapter Drill BIt Set Hex Shank 1/4" 3/8" 1/2"Driver Tools AD Product Description: Model: Sleeve Post AD Post with Steel Ball Surface treatment: sand blasting or chrome plating Specifications: 1/4*1/4*65mm; 3/8*1/4*65mm; 1/2*1/4*72mm; OPP bag weight: about 100g Due to different production batches, there are two styles of random.OPP bag weight: about 100g.