- www.homedepot.com/b/Tools-Hardware-Power-Tool-Accessories-Drill-Bits-Auger-Bits/N-5yc1vZc264
- en.wikipedia.org/wiki/Brace_(tool)
- http://www.homedepot.com/p/Affinity-10-in-Reversible-Ratchet-Brace-60111/205167450
- http://www.sears.com/footprint6011117144ratchetbrace/pSPM5866556603plpSellerId=UnbeatableSale.com,%20Inc.&prdNo=&blockNo=3&blockType=G3
- https://en.wikipedia.org/wiki/Drill#Hand_drills
- http://www.sears.com/schroeder-heavy-duty-1-2-inch-rotary-breast-hand/p-00934093000P?plpSellerId=Sears&prdNo=2&blockNo=2&blockType=G2
- https://en.wikipedia.org/wiki/Persian_drill
- http://www.sears.com/push-n-pull-push-pull-click-screwdriver/p-SPM7763883228?plpSellerId=Everest%20Ventures&prdNo=2&blockNo=2&blockType=G2#
- en.wikipedia.org/wiki/Auger_(drill)
- www.sears.com/lawn-garden-tillers-cultivators-augers-auger-bits-accessories/b-1206330492
- www.homedepot.com/catalog/productImages/1000/d4/d47eedb0-f2f3-44df-8356-7be3c8a6ecf3_1000.jpg
- http://www.sears.com/search=extension%20bit
- www.sears.com/search=extension%20bit
- www.homedepot.com/p/Grand-Rapids-Industrial-Products-Grip-Fluted-Drill-Bit-Set-5-Piece-35325/206515495?keyword=fluted+drill+bit
- en.wikipedia.org/wiki/Drill_bit#Twist_drill_bits
- www.homedepot.com/s/twist%2520bit?NCNI-5
- www.sears.com/search=twist%20bit
- www.garrettwade.com/improved-yankee-style-screwdrivers-gp.html