product features: Our Subsea bolt tensioner incorporating the quick reaction nut feature reduces diver fatigue, improving diver safety and productivity. Piston stroke - 1.18inc h (Except WST1 - 0.79inch) Max tool pressure - 21,750psi D includes an allowance for tool removal after bolt tightening with 30mm tool stroke Product development is constantly taking place and dimensions may change without notice Want to know the size you need? Come visit our website now https://www.atwwren.com/products/REDUCER_Insert.html Or contact us Tel: +86 571 8811 5720 Fax: 0571-88110210 Postcode: 311100 E-mail:info@wrenchina.com Company Name: Hang Zhou WREN Hydraulic Equipment Manufacturing Co., Ltd. Address: No. 24, Xingxing Road, Linping, Hang Zhou, China