SE 7503SD-2 Power Extension Bit Set for Drills (2 Pack)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Power extension bar sizes (inch): 1/4 Hex by 1/4; 1/4 Hex by 3/8; 1/4 Hex by 1/2 </span></li><li><span class="a-list-item"> Driver width: 1/4-inch </span></li><li><span class="a-list-item"> Ball-bearing lock </span></li><li><span class="a-list-item"> Chrome vanadium heat-treated steel and turns any power drill into a power nut driver </span></li><li><span class="a-list-item"> Pack of 2 Sets </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51o3XoJL%2BHL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41S1mtBXkAL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31xLVHCsY8L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41o6k2ZxJ2L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41l3uNH8soL.jpg" noproxy>