Check the listing for details. Milwaukee 48-32-4639 SHOCKWAVE Impact Duty 2" PH3 Phillips Bits, 5-Pack. Condition: New. Listed at 11.97 USD. Milwaukee SHOCKWAVE™ Impact Duty™ 2" PH3 Phillips Bits, 5-Pack, are designed to be the most durable and best fitting driver bits on the market. These Phillips bits feature a Milwaukee Wear Guard Tip™ which increases the protection and wear resistance of the bits for longer-lasting life. They are also optimized with Shockzone™ which is designed to absorb peak torque and prevent breaking. Constructed of custom Alloy76™ Steel and heat treated by tip type, these driver bits are built to last up to 50x longer than competitor impact driver bits. They also have a precision machined tip which prevents stripping and reduces wobble. They are designed for use with impact drivers and drill driver and are laser etched with their size for quick and easy identification.