universal Subgroups for clock work mechanism Suspension springs for clock work mechanismPU: 3 pieces namethicknesslengthitem No.suspension extension0.04mm24.0mm070580suspension extension0.05mm30.0mm070582 suspension extensions Suspension extensionsPU: 1 piece namethicknesslengthitem No.suspension extension0.10mm60.0mm070584suspension extension0.10mm120.0mm070585 brass clamps nameVersioncontentsitem No.brass clampssingle5 pieces070594