Planet Waves Glass Slide， Medium<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Made from boron silicate for enhanced durability， smoothness and tone </span></li><li><span class="a-list-item"> Flawless finish and extra smooth surface glides over strings </span></li><li><span class="a-list-item"> 4mm wall thickness produces warm， thick tone and sustain </span></li><li><span class="a-list-item"> 51mm length， 21.5 inner diameter </span></li><li><span class="a-list-item"> Available in small， medium and large sizes </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31tpcMwcRDL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41bxRCRPR8L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51%2B8aej6YNL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51oU4KljUgL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41IBGafPTXL.jpg" noproxy>