Standard 4" (100 mm), four-outlet head for use with certain ACE reaction flasks

Supplied with three outer joints in line, plus a thermometer side neck which is internally threaded (with #7 Ace-Thred) for use with a nylon bushing. Use of the threaded side neck permits easy adjustment of thermometer depth. Use a clamp for securing to flasks. Supplied complete with a bushing and FETFE o-ring. Fabricated from borosilicate glass.