ITEM NAME:Round Shank Range Keyless Screwdriver Micro Clamping Drill Chuck Universal Features: Quickly change your hex shank driver into a drill; Keyless chuck finger-tightens for easy bit changes Unlimited used in automotive, garages, warehouses, offices, homes etc. Made of metal: strong, durable and anti-rusting Can be used with drill bits from 0.4mm up to the size of 3.4mm One-handed operation - push in accessory to insert, pull out sleeve to release Specifications: Material:Metal Color:Black Size(L×W):22×14.5 mm Clampable range:0.4-3.4 mm thread 9/32-40 Package Included:1 x Keyless Drill Chuck Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement..Quickly change your hex shank driver into a drill; Keyless chuck finger-tightens for easy bit changes. Can be used with drill bits from 0.4mm up to the size of 3.4mm. One-handed operation - push in accessory to insert, pull out sleeve to release.