The TT Fixed Head models differ from the TTi Wrenches in having a robust, non-ratcheting fixed head.
All other features remain the same.
TTf20 3/8" N·m/lbf·ft
TTf20 N.m 3/8" N·m only
TTf15 ft.lb 3/8" lbf·in only
Norbar has devised easy-to-use online calculators that support the correct application of torque in three key areas:
Norbar Torque Tools Inc. 36400 Biltmore Place, Willoughby, Ohio 44094, USA