Amoolo Hex Shank Drill Bit Set, 16Pcs Titanium Hss Twist Impact, 1/16?-3/8? Product Details Wide Applications - compatible with power screwdrivers, impact drivers, and other tools that accept 1/4" hex shanks, allowing for quick changing between multiple drill bits and screwdriver bits with just one power tool; Upgraded Structure - press in pin connection makes the bit and hex shank an integrated structure to prevent break off during drilling, greatly reduced the risk of drill bit snapped off from the hex drive; Eliminates Wobbling Chatter - the final straighten process is added. which keep the bit in a straight line during rotation and reduce chatter; Designed Bladepoint - these bits with a 135 split point keep centered without a pilot hole, full-ground body drill faster with fewer defects. excellent chip removal and heat removal; What you Get - combo set of 16 pcs, 12 most commonly-used sizes (1/16",5/64",3/32",7/64",1/8",9/64",5/32",3/16",7/32",1/4",5/16",3/8") to satisfy all needs, additional piece of 1/16", 5/64", 3/32" and 1/8"for easy replacement. total 16 Pcs hex shank twist drill bit set come with a portable plastic case for easy select, storage and carry. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.