Burette Clamp - One Piece

Holds 50ml burettes firmly to a retort rod. Moulded in acetal copolymer. Suitable for use with retort rods up to 13 mm diameter and burettes up to 14 mm diameter.

Q = What diameter retort rods are these suitable for?
 Also, what diameter burettes can they accommodate?
A = These are designed for use with 12mm diameter retort rods.
 Burettes up to about 14 mm diameter are suitable.