Features SWIVEL DESIGN Support flexible swivel from 0° to 20°, the bit extension head can also be rotated 360° to facilitate use in corners and seams. Firmer Clamping The magnetic design can hold the screwdriver bits firmly at both high and low speed, and the replacement is very convenient. 1/4" Hex Shank:The standard 1/4" interface is perfect for hex shank bits, making the pivot bit holder compatible with a variety of tool bits. Great Materials The drill bit extension is made of high quality chrome vanadium steel and is very durable for working on wood, PVC, plastic, etc. Total 5 Pieces The set consists of 5 drill extension bit holders, and the large quantity will surely meet your diverse work needs. Specification: Item Type:Drill Bit Extension Connecting rod head interface: 1/4" Angle: can be rotated from 0 to 20° and the head of the extension rod can be rotated 360°. Head design: built-in magnet on the head, easy to lock interface. Package list: 5 x drill extensions Package List 5 x Drill Bit Extension