Stainless steel piano wire - Materials: Piano wire: stainless steel conforming to DIN 17224, Stainless steel XCrNi7 - Wound: right hand - Ends: Wire = 0.8mm squared, not ground Wire > 0.8mm squared and ground - Loads: Load values indicated are based on a life of 50,000 cycles at 50% of max. load - Tolerances: All sizes and strengths in accordance with DIN 2095 (Grade 2) Info - These springs are not preset - Free length Lo will reduce slightly after first operations under load - For custom made springs, please contact us (Minimum quantity may apply)