Bearing, Trubore, PTFE Liner for Polished Shafts, 10mm. Ace Glass. Self-aligning, lubricant free PTFE Trubore bearing or combination bearing / debris trap. Use with 8074 stainless steel or 8075 polished 10mm od glass shafts. Debris trap model prevents bearing-wear particles from contaminating the reaction vessel and has a side port for clean