Handy kit includes a nickel-plated zinc, double-burette (buret) clamp; clamp holder; and lab stand with aluminum rod and chemical-resistant porcelain base. The burette clamp can hold up to two burettes—one 50-mL burette is included.Our Class B 50-mL burette is manufactured from high-quality borosilicate glass, and designed for accuracy and durability. Burette features a carefully drawn tip for a reliable drainage rate, a noncontaminating, 2-mm, straight-bore PTFE stopcock, and brown-colored permanent graduations. SpecificationsBurettes Tolerance: 0.1 Burettes Capacitym L: 50 Description: Stand Kit Burette, Clamp, and Stand