Simpson Wall Tie Tension Testing Kit for 3/8" Heli-Tie HELITEST37AThe Heli Tie wall tie tension tester is the recommended equipment for accurate onsite testing of load values in any specific structure. The tester features a key specifically designed to grip the Heli Tie fastener and provide accurate results. For help with onsite testing procedures, please contact Simpson Strong Tie (800) 999 5099 Key Features Accurately determines load values onsite Includes key to grip fastener for accurate results Works with the