Genius Tools 9 Piece 1/4", 3/8" & 1/2" Dr. Extension Bar Set EX-2349 9 Piece 1/4", 3/8" & 1/2" Dr. Extension Bar Set Included 1/4" Drive Extension Bar Sizes: 2", 4", 6" Included 3/8" Drive Extension Bar Sizes: 1-3/4", 3", 6" Included 1/2" Drive Extension Bar Sizes: 2", 5", 10" Limited Lifetime Warranty from Manufacturer Defects