Specifications: 10mm x 1.50 LHF Less stops to change line 5/16 x 18 RHM 5/16 x 24 RHF Arbor sizes included: 8mm x 1.25 RHM 7mm x 1.0 LHM 12mm X 1.75 LHF 7/16 x 20 20 RHF Easy installation Quick easy line loads 12mm x 1.50 LHF 8mm x 1.