TEKTON 1601 3/8-Inch Drive Extension Bar Set, Cr-V, 3-Piece Adds length to access hard-to-reach fasteners Knurled bands offer a nonslip grip for turning loosened fasteners by hand Spring-loaded detent balls securely latch onto sockets, preventing them from being dropped Detent notches in drive ends lock onto ratchets and breaker bars Made of premium chrome vanadium steel with a mirror chrome finish