Descriptions:  21/23/27pcs Drill Bits Set Batch Heads Flexible Shaft Drill Tools Kit.     Features: - Application: Tile, concrete, brick, glass, plastic, and wood, etc.  - The kit includes a variety of drive drills and drill bits and a range of accessories to aid in a variety of drilling and fastening applications.  - Maximum rust and corrosion resistance.  - Strength, flexibility, and durability.     Specifications:  Flexible shaft size: Approx. 300mm;  Screw extractor size: Approx. 5-13mm(W), 19cm(H);  T wist bit size: Approx. 3(W)X60(L)mm,4x75mm, 5x85mm, 6x90mm;  Extension rods size: approx. 6mm;  Type :Qty  Package Included;  A: 21pcs;  10 x batch heads;  9 x 5-13mm Screw Extractor;  1 x extension rods;  1 x 300mm Flexible Shaft Drill Flexible Shaft for Electric drill;  B:23pcs;  10 x batch heads;  9 x 5-13mm Screw Extractor;  1 x 300mm Flexible Shaft Drill Flexible Shaft for Electric drill;  1 x Mini wrench;  1 x L-wrench;  1 x Batch head handle;  C:27pcs;  10 x batch heads;  9 x 5-13mm Screw Extractor;  4 x 3mm-6mm t wist bit;  2 x Dual batch heads;  1 x extension rods;  1 x 300mm Flexible Shaft Drill Flexible Shaft for Electric drill;