The Seekonk IT-4 3/8" Precision Inline Pre-Set Torque Limiter 60-300 in. lbs controls torquing through clutching action. No chance for error because preset torquing action prevents overtightening, even with continued turning or differing tool lengths and adapters. Use with your 3/8" ratchet or breaker bar. Laser marked, color coded ID ring prevents confusion when multiple tools are used. Torques right or left, but is certified to +/- 4% accuracy in one direction only. Field recalibration not recommended.