Assembly studs for manual pre-assembly of the FI-VK series allow pre-assembly of cutting rings on tube ends with maximum precision, reliability and process reliability. They are available in the Extra-Light, Light and Heavy Series series as per ISO 8434-1 / DIN 2353. Hardened and wear-resistant. For assembling tube connectors and cutting ring fittings from the STAUFF Connect series made of steel with 24° internal taper. For hydraulics.