LEIGAO Specifications and ParametersMetal material,Mount:1/2-20UNF,Capacity Range:2-13mm (can NOT be used counterclockwise)Keyless chuck finger-tightens for easy bit changes.Affordability And FlexibilityMake the most of your current rotary hammer.Much cheaper than buying a second rotary drill. Quick and easy change for different drilling jobs,saves carrying two drills about.Easy To UseHigh-grade keyless chuck with 2-13 mm opening for greater tool flexibility.Easy to set up with the SDS-plus adapter included in the set.Fast and easy to use by hand for fast bit changes.Keyless chuck finger-tightens for easy bit changes.Long LifeIndustrial grade professional adapter made of high-quality steel,ultra-durable construction meets the demands of frequent use.Quick-change SDS shank for electric hammer.High QualityThis drill chuck is made of high quality plastic and chrome-vanadium steel,high hardness,durable in use.Specifications:Hardware: HSSDiameter of the head: 43mmClamping range: 2-13mmMount: 1/2-20UNFFeatures:Instantly convert impact driver to hold non-quick change drill driver bits.Keyless chuck finger-tightens for easy bit changes.Greater clamping force, effectively preventing drill bits loose off, more reliable.Quick-change SDS shank for electric hammer.color:blackPackage Included:1 x Drill Chuck1 x SDS Adapter