Glass Tube Feature Single-Hole and Multi-Hole Cavities. Standard materials include: S7010N (10% Samarium doped silicate glass); S7005 (5% Samarium doped silicate glass); S7000 (Cerium doped silicate glass) Fused Silica,Pyrex All Samarium and Cerium cavities are chemically strengthened. All cavities are made to customer requirements. Inside Hole Diameter ± 0.10 mm Hole Parallelism < 0.04 mm per 25 mm length End Perpendicular to Holes < 10 arc minutes Edge Bevels < 0.13 to 0.50 mm FW @ 45º depending on wall thickness Surface Quality Commercial polish all surfaces or per customer print. Email: [email protected] Tel:+86-755-2372 7820 Fax：+86-755-2302 3823 www.hobbite.net Address:2F, Guohuitong Business Center, BaoAn District, ShenZhen City, GuangDong Province, PRC. Zip Code:518102