Rimac Big Blue Spring Tester0-500 lbs./in # BB0500Valve Spring Tester, Rimac Big Blue, 0 500 lbs. in. Range, Each Valve Spring Tester Style: Bench mounted Spring Pressure Tested: Installed height Spring Pressure Range: 0 500 lbs. in. Quantity: Sold individually. Rimac Big Blue Spring Testers Rimac Big Blue valve spring testers feature a pressure range up to 1,000 lbs. in. These valuable tools can be easily bench mounted for secure use. Since the 1920s, Rimac has been the industry standard when it