Bosch HCRR001 Rubber Ring and Pin for SDS-max Rotary Hammer Core Bit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Wave design transfers energy to bit more effectively for up to 40 percent faster drilling versus previous design</li><li>Carbide-tipped centering bit</li><li>Asymmetrical carbide teeth for faster cutting， longer life</li><li>All-in-one core transmits power directly to the end of the bit</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41pxDbJBnxL.jpg" noproxy>