Alvin 12-Inch Clear Professional Acrylic Triangle 45/90 Degrees (131C-12)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Will not discolor or warp with age and handling. </span></li><li><span class="a-list-item"> Refracted light has an illuminating effect on the drawing by accentuating the triangle’s edge. </span></li><li><span class="a-list-item"> All models feature a double-taper cutout center for quick </span></li><li><span class="a-list-item"> Supplied in poly bag with hanging hole. </span></li><li><span class="a-list-item"> Size: 12 inches. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31CvLq8y2pL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31dJr7XwJqL.jpg" noproxy>