Check the listing for details. DISC Graphite Mold, 6 Versions, CGBeadroller, Premier Graphite Glass Tool. Condition: New. Listed at 56.00 USD. ---BR-18 Small Disc CGBeadroller Cavity Sizes (mm) 4mm mandrel slot12x5, 13x5.5, 14x6, 15x6.5, 16x7, 17x7.5, 18x8 ---BR-23 Medium Disc CGBeadroller Cavity Sizes (mm) 4mm mandrel slot19x8.5, 20x9, 21x9.5, 22x10, 23x10.5, 24x11 ---BR-24 Large Disc CGBeadroller Cavity Sizes (mm) 7mm mandrel slot25x11.5, 26x12, 27x12.5, 28x13, 29x13.5, 30x14 ---BR-29 X-Lg Disc CGBeadroller Cavity Sizes (mm) 11mm mandrel slot34x14, 38x14.5, 42x15, 46x15.5 ---BR-62 Small Ribbed Disc CGBeadroller Cavity Sizes (mm) 4mm mandrel slot12x5, 13x5.5, 14x6, 15x6.5, 16x7, 17x7.5, 18x8 ---BR-72 Medium Ribbed Disc CGBeadroller Cavity Sizes (mm) 4mm mandrel slot19x8.5, 20x9, 21x9.5, 22x10, 23x10.5, 24x11 CGBead tools are the premier graphite beadroller, and bead-press, tools of the hot glass industry. Graphite mold made for the lampwork industry.(beads not included) Beadrollers not only help you with those difficult curves,but also act as a measuring guide once your first bead is in the kiln.There's no more guessing if the next one will be the same size!! There's also a handy little area for marvering on the front. The reversed side is a flat marvering surface.