Screwdriver -Flexible Drill Bit Extension Highlights Generic Brand Flexible Drill Bit Extension Description: Made of premium carbon steel and plastic material, durable to use Flexible shaft is perfect to deal with any narrow space , blind spot and any other places the screwdriver can't reach An important tool for hardware maintenance and repair Multiple different shaped screwdriver bits including slotted, phillips, hex etc., 9 different size handles, meet your different needs Convenient, easy to use Specification: 21 Pcs Set: Flexible Shaft x 1 Screwdriver Bit x 10 Connecting Rod x 1 Sleeve x 9 27 Pcs Set: Flexible Shaft x 1 Screwdriver Bit x 10 Connecting Rod x 1 Sleeve x 9 Twist Drill Bit x 4 Double Head Bits x 2 Size Chart: Flexible Shaft Length: Approx 2.95mm / 11.61inch Hex Shank: 1/4"" Inner Hex Head: 1/4"" 1/4 ""Handle: 5-13mm Connecting rod length: Approx.60mm / 2.36 inch Double head bit length: Approx.110mm / 4.33 inch Twist drill: 3mm, 4mm, 5mm, 6mm Material: carbon steel, plastic Color: as shown Package includes: 1 set of flexible shaft screwdriver and bit Note: Screwdriver is not included.