Bosch T3914SC 1-7/8 In. SDS-plus SPEEDCORE Thin-wall Core Bit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>High-grade tungsten carbide teeth</li><li>Pilot bit is integrated with mandrel</li><li>Ejector hole</li><li>Works with Bosch SPEEDCORE SDS-plus pilot bits and extensions</li><li>Designed for drilling with smaller hammers</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51%2Bl4LXhQlL.jpg" noproxy>