1. ISO 7241-A, ISO 7241-B; 2. hydraulic quick couplings; 3. Zero leakage; 4. dust protective cap available Bolev Hydraulics:Bolev facilities, welcome your visit!Hydraulic quick release couplings, we provide a large variaty of hydraulic couplings and couplers for pneumatic applications, material covers Carbon Steel, Stainless Steel and brass, it features:standard ISO 7241-A, ISO 7241-B;Carbon ...