4Pcs Laboratory Flask Cork Stand Support Holder 80mm Diameter Round Bottom Holder for 50ml-250ml Flasks Flask Pad for Support Description: Providing excellent support to 50ml-250ml round bottom flasks, convenient and practical. Made of cork material, light weight, Good elasticity, Large Friction coefficient, Strong heat and electrical insulation. Durable and sturdy, its funnel design allows for accommodate different size flasks. Perfect for holding your flasks or other spherical bottom containers from falling easily. Specification: Material: Cork Use for Flasks: 50ml-250ml Inner Diameter: 35mm / 1.38 inch Dimension: 80 x 30mm / 3.15 x 1.18 inch (D*H) Package Content: 4 x Flask Support Stand _x000D_