Replaces O.E.M. #305901. Fits model 2500 LP. Length or O.D. - 2-1/4", Width or I.D. - 2-3/8", Thickness or HT. - 1/2".
Replaces O.E.M. #309891. Green machine - fits model 3000 SS, Shindaiwa models T25 & LT20 20000-81740. Also fits Robin 1082. Length - 2-3/8", Thickness or HT. - 1/2".