
Specification:Product Name : Drill ChuckCapacity: 0.3-3.6mm, 0.6-8mmTotal Length: 48mm / 1.9", 72.5mm / 2.9"Head Size: 22 x 17mm / 0.9 x 0.7inch(L*W), 30 x 24mm / 1.2 x 0.94inch(L*W)Shank Diameter : 6.35mm / 1/4"Adapter Material : 40crShank Type : Hex Shank Package Content :2 x Drill Chuck Description:1.Drill Chuck Key-Less - No Chuck Key Needed - Hold and Turn to Tighten or Loosen Chuck.2.Fits Many Drill Models and Brands.3.Chuck can tighten on drill bits from 0.3-3.6mm, 0.6-8mm.4.Excellent replacement or upgrade for thousands of model corded and cordless drills.